Relationships

This is a W.I.P. Page. Links will be added when I get a chance.

AnimeDudeMii has given the different characters different relationships. Here is a list of (most of) them.

Mario Mario

 * 1) Older Twin Brother and Rival of Luigi.
 * 2) Best Friend of Yoshi and Toad
 * 3) Friend of Rosalina, Wario, Waluigi, Stanley, Pauline, Mona, Ashley, Daisy, Donkey Kong, Diddy Kong, Funky Kong
 * 4) Boyfriend/Husband of Peach
 * 5) Enemy of Bowser, Metal Mario, Bowser Jr, Mr. M, and Koopalings
 * 6) Rival of Wario, Sonic, Stanley, Mr. M and Ninja(Final Fantasy)

Luigi Mario

 * 1) Younger Twin Brother and Rival of Mario.
 * 2) Best Friend of Yoshi and Toad
 * 3) Friend of Rosalina, Wario, Waluigi, Stanley, Pauline, Mona, Ashley, Donkey Kong, Diddy Kong, Funky Kong, Nabbit
 * 4) Boyfriend/Husband of Daisy
 * 5) Rival of Waluigi, Tails, Black Mage
 * 6) Enemy of Bowser, Bowser Jr and The Koopalings

Princess Peach Toadstool

 * 1) Sister-in-Law/Best Friend of Daisy
 * 2) Girlfriend/Wife of Mario
 * 3) Best Friend of Birdo and Toadette
 * 4) Princess of Toad
 * 5) Rival of Amy

Princess Daisy

 * 1) Sister-in-Law/Best Friend of Princess Peach
 * 2) Friend of Rosalina
 * 3) Best Friend of Birdo and Toadette
 * 4) Girlfriend/Wife of Luigi
 * 5) Rival of White Mage

Yoshi

 * 1) Best Friend of Mario, Luigi and Toad
 * 2) Boyfriend/Husand of Birdo
 * 3) Rival of White Mage

Birdo

 * 1) Girlfriend/Wife of Yoshi
 * 2) Best Friend of Peach and Daisy

Wario Wario

 * 1) Brother of Waluigi
 * 2) Friend of Mario, Luigi, Yoshi, Toad, Yellow Toad, Nabbit, Donkey Kong, Diddy Kong, Funky Kong
 * 3) Rival of Mario, Mr. M, Shadow, Luigi and Ninja(Final Fantasy)
 * 4) Boyfriend of Mona
 * 5) Enemy of Bowser, Bowser Jr and The Koopalings

Waluigi Wario

 * 1) Brother of Wario
 * 2) Friend of Mario, Luigi, Yoshi, Toad, Yellow Toad, Nabbit, Donkey Kong, Diddy Kong, Funky Kong
 * 3) Rival of Luigi
 * 4) Boyfriend of Ashley
 * 5) Enemy of Bowser, Bowser Jr and The Koopalings

Toad

 * 1) Best Friend of Mario,Luigi, Yoshi and Princess Peach
 * 2) Boyfriend of Toadette
 * 3) Friend of Yellow Toad

Mona

 * 1) Girlfriend/Protégé of Wario
 * 2) Friend of Mario, Luigi, Yoshi, Peach, Daisy, Rosalina, Pauline, Waluigi
 * 3) Best Friend of Ashley

Ashley

 * 1) Girlfriend/Protégé of Waluigi
 * 2) Friend of Mario, Luigi,Yoshi, Peach, Daisy, Rosalina, Pauline
 * 3) Best Friend of Mona

Stanley Bugman

 * 1) Best Friend of Foreman
 * 2) Friend of Mario, Luigi, Yoshi, Mona, Ashley, Toad, Donkey Kong, Diddy Kong, Funky Kong
 * 3) Boyfriend of Pauline
 * 4) Rival of Ninja(Final Fantasy), White Mage, Black Mage, Mario, Wario, Luigi and Yoshi

Foreman Spike

 * 1) Best Friend of Stanley
 * 2) Friend of Mario, Luigi, Yoshi, Mona, Ashley, Toad, Pauline, Donkey Kong, Diddy Kong, Funky Kong
 * 3) Rival of Waluigi

Pauline

 * 1) Girlfriend of Stanley
 * 2) Friend of Foreman, Luigi, Peach, Daisy and Rosalina

Toadette

 * 1) Girlfriend of Toad
 * 2) Friend of Mario, Luigi, Yellow Toad and Nabbit
 * 3) Best Friend of Peach

Yellow Toad

 * 1) Friend of Mario, Luigi, Toad, Toadette and Nabbit

Bowser

 * 1) Father of Bowser Jr. and the Koopalings
 * 2) Admirer of Princess Peach
 * 3) Enemy of Mario, Luigi, Yoshi, Yellow Toad, Wario, Waluigi, Stanley, Foreman, Donkey Kong, Diddy Kong, Funky Kong, Ninja(Final Fantasy), White Mage, Black Mage and Sonic Gangs
 * 4) Best Friend/Rival of Dr Eggman
 * 5) Allies of Metal Mario, Dry Bowser and Tatanga (formerly)

Bowser Jr.

 * 1) Son of Bowser
 * 2) Brother of the Koopalings

Koopalings
Each have their own relationships.

Ludwig von Koopa

 * 1) Brother of Bowser Jr., Iggy, Wendy, Roy, Larry, Lemmy and Morton
 * 2) Son of Bowser

Iggy Koopa

 * 1) Brother of Bowser Jr., Ludwig, Wendy, Roy, Larry, Lemmy and Morton
 * 2) Son of Bowser

Wendy O. Koopa

 * 1) Sister of Bowser Jr., Ludwig, Iggy, Roy, Larry, Lemmy and Morton
 * 2) Daughter of Bowser
 * 3) Crush of Black Yoshi

Roy Koopa

 * 1) Brother of Bowser Jr., Ludwig, Iggy, Wendy, Larry, Lemmy and Morton
 * 2) Son of Bowser

Larry Koopa

 * 1) Brother of Bowser Jr., Ludwig, Iggy, Wendy, Roy, Lemmy and Morton
 * 2) Son of Bowser

Lemmy Koopa

 * 1) Brother of Bowser Jr., Ludwig, Iggy, Wendy, Roy, Larry and Morton
 * 2) Son of Bowser
 * 3) Adopted Nephew of Wario

Morton Koopa Jr.

 * 1) Brother of Bowser Jr., Ludwig, Iggy, Wendy, Roy, Larry and Lemmy
 * 2) Son of Bowser

Mr. M

 * 1) Enemy of Mario, Luigi, Wario, Stanley and Yoshi
 * 2) Allies of Bowser, Bowser Jr., The Koopalings and Metal Mario

Nabbit

 * 1) Friend of Mario, Luigi, Yoshi, Yellow Toad, Toadette, Wario, Waluigi, Mona, Ashley, Donkey Kong, Diddy Kong, Funky Kong, Stanley, Foreman
 * 2) Enemy of Bowser, Bowser Jr., The Koopalings and Metal Mario

Ninja (Final Fantasy)
Babies Baby Mario, Baby Peach and Baby Luigi each have their own relationship. Baby Mario Brother of Baby Peach Son of Mario and Princess Peach Cousin of Baby Luigi Nephew of Luigi and Daisy Baby Peach Sister of Baby Mario </li>Daughter of Mario and Princess Peach </li>Cousin of Baby Luigi </li>Niece of Luigi and Daisy </li></ol><h4 data-rte-washtml="1" data-rte-line-start="true">Baby Luigi <ul data-rte-washtml="1" data-rte-line-start="true">Son of Luigi and Daisy </li>Cousin of Baby Mario and Baby Peach </li>Nephew of Mario and Peach </li></ul>
 * 1) Boyfriend of White Mage
 * 2) Friend of Black Mage
 * 3) Enemy of Bowser, Bowser Jr. and Metal Mario
 * 4) Rival of Mario, Lugi, Yoshi, Wario, Stanley, Walugi, Donkey Kong, Diddy Kong, Funky Kong

Black Yoshi

 * 1) Frenemy of Mario and Friends
 * 2) Cousin of Grey Yoshi
 * 3) (Secret) crush of Wendy O. Koopa

Grey Yoshi

 * 1) Cousin of Black Yoshi

Rosalina

 * 1) Friends of Mario and his friends
 * 2) (adopted) child of Luma

Luma

 * 1) (adopted) mother of Rosalina
 * 2) friend of Mario

Donkey Kong

 * 1) Partner of Diddy Kong
 * 2) Friends of Dixie Kong, Luigi, Toad, Yoshi, Peach, Daisy, Rosalina, Wario and Waluigi
 * 3) Boyfriend of Candy Kong
 * 4) Family of Cranky Kong and Funky Kong
 * 5) Enemy of Bowser

Diddy Kong

 * 1) Partner of Donkey Kong
 * 2) Boyfriend of Dixie Kong
 * 3) Friends of Mario, Luigi, Toad, Yoshi, Peach, Daisy, Rosalina, Candy Kong, Wario and Waluigi
 * 4) Family of Funky Kong, and Cranky Kong
 * 5) Enemy of Bowser

Funky Kong

 * 1) Friends of Mario, Luigi, Toad, Yoshi, Peach, Daisy, Rosalina, Wario and Waluigi
 * 2) Family of Cranky Kong, Diddy Kong and Donkey Kong

Cranky Kong

 * 1) Family of Donkey Kong, Diddy Kong, and Funky Kong
 * 2) Friends of Mario and His Friends
 * 3) Enemy of Bowser

Candy Kong

 * 1) Girlfriend of Donkey Kong
 * 2) Friends of Mario and His Friends

Dixie Kong

 * 1) Girlfriend Of Diddy Kong
 * 2) Friends Donkey Kong and Mario and His Friends

Metal Mario

 * 1) Friend of Bowser, Bowser Jr. and The Koopalings
 * 2) Enemy of Mario, Nabbit, Wario, Stanley, Mona, Toad, Donkey Kong, Diddy Kong, Funky Kong and Toadette
 * 3) Friend/Rival of Metal Sonic

White Mage

 * 1) Girlfriend of Ninja(Final Fantasy)
 * 2) Friend of Black Mage
 * 3) Enemy of Bowser, Bowser Jr. and Metal Mario
 * 4) Rival of Mario, Luigi, Yoshi, Stanley, Wario and Daisy

Black Mage

 * 1) Friend of Ninja(Final Fantasy) and White Mage
 * 2) Rival of Luigi
 * 3) Enemy of Bowser, Bowser Jr. and Metal Mario

Sonic The Hedgehog

 * 1) best friend of Tails, Knuckles and Sally
 * 2) friend of Shadow, E-123 Omega, Silver, Cream, Rouge, Maria, Blaze, Espio, Charmy, Vector, Avatar(partner), Nicole, Vanilla, Cosmo, Breezie, Nero.
 * 3) enemies of Eggman, Metal Sonic, Orbot, Cubot, Chaos(formerly), King Arthur, Infinite, The Deadly Six, Scourge, Mephies.
 * 4) rival of Mario, Silver, Shadow, Knuckles, Jet, Scourge.
 * 5) family of Sonia, Manic, Queen Aleena.

Miles 'Tails' Prower

 * 1) Best Friend of Sonic, Knuckles
 * 2) Friend of Shadow, Rouge, Maria, Silver, Blaze, Espio, Sticks, Vector, Charmy, E-123 Omega, Big, Sonia and Breezie
 * 3) Friendly Wang of Cosmo
 * 4) Boyfriend of Cream
 * 5) Rival of Wave, Yoshi, Toad, Luigi.

Knuckles The Echinda

 * 1) best friend of Sonic, Tails and the Chaotix
 * 2) Friend of Shadow, Silver, Cream, Maria, Blaze, Sticks, Big, Espio, Charmy, Vector, E-123 Omega, Sonia, Avatar, Nicole, Vanilla, Cosmo, Breezie.
 * 3) BoyFriend of Sonia
 * 4) Rival of Storm, Wario, Donkey Kong, Sonic, Rouge.

Amy Rose

 * 1) best friend of Peach, Cream, Maria, Rouge, Blaze, Tikal, Sonia, Nicole, Vanilla, Chip, Princess Elise, Queen Aleena, Sticks.
 * 2) friendly of Sally
 * 3) Girlfriend of Sonic
 * 4) enemies of Breezie.
 * 5) Rivals of Peach, Rouge, Sally

Shadow The Hedgehog

 * 1) Best Friend of E-123 Omega
 * 2) Friend of Sonic, Tails, Knuckles, Cream, Blaze, Espio, Silver, Vector, Charmy, Sticks, Big, E-10000B, Sonia, Manic, Queen Aleena, Haruhi, Mikuru, Yuki, Avatar, Vanilla, Nicole, Chaos, Tikal.
 * 3) Enemies of Dr. Eggman, Metal Sonic, Orbot, Cubot, Mephies, Infinite, Zavok, Chaos, Nero(at first).
 * 4) Boyfriend of Rouge
 * 5) Rival of Silver, Sonic, Knuckles
 * 6) Friend/Rival of Wario

Cream The Rabbit

 * 1) Best Friend of Big, Blaze, Silver, Cosmo, E-123 Omega.
 * 2) Friends of one another Sonic, Sticks, Knuckles, Shadow, Maria, Rouge, Espio, Vector, Charmy, Nicole, Nero.
 * 3) friend of Cheese
 * 4) Daughter of Vanilla
 * 5) Girlfriend of Tails

Rouge The Bat

 * 1) Best Friend of Shadow and E-123 Omega
 * 2) Girlfriend and Rival of Knuckles
 * 3) Friend of Sonic, Tails(rival), Sticks, Silver(rival), Espio, Vector(rival), Charmy, Cosmo, Big, Blaze, Maria, Cream, G.U.N. Commander.
 * 4) Enemy of Dr. Eggman(sometimes), Metal Sonic, Infinite, Orbot, Cubot, Mephies, Breezie.
 * 5) Rival of Amy, Silver, Tails, Knuckles, Vector

Silver The Hedgehog

 * 1) Best Friend of Yuki
 * 2) Friend of Sonic, Shadow, Rouge, Sticks, Maria, Tails, Espio, Cream, Knuckles, Vector, Charmy, Big, E-123 Omega, Cream.
 * 3) Boyfriend of Blaze
 * 4) Rivals of Sonic, Shadow, Tails and Knuckles

Blaze The Cat

 * 1) Girlfriend of Silver

Dr. Eggman A.K.A Dr. Ivo Robotnik

 * 1) Enemies of Sonic, Shadow, Silver, Tails, Knuckles, Amy, Blaze, Cream, Rouge, Espio, Charmy, Vector, E-123 Omega, Big and Mario Gangs.
 * 2) Best Friend/Rival of Bowser
 * 3) Allies of Metal Sonic, Zavok, Zazz, Classic Dr. Eggman, Eggman Nega, Orbot, Cubot, Infinite, Bowser jr., Chaos (formerly)

Sticks The Badger

 * 1) Friend of Sonic, Tails, Knuckles, Cream, Espio, Rouge, Silver, Blaze, Shadow, Vector, Charmy, Big and E-123 Omega
 * 2) Enemy of Dr. Eggman, Metal Sonic, Orbot, Cubot.
 * 3) (Possible) Girlfriend of Nero the Hedgehog

Nero The Hedgehog

 * 1) Friend of Sonic, Tails, Knuckles, Silver, Espio, Amy Rose, Cream, Blaze, Rouge, Mario Gangs.
 * 2) (Possible)Boyfriend of Sticks
 * 3) Rival of Shadow(at first).

Espio The Chameleon

 * 1) Best Friends of Vector and Charmy
 * 2) Friend of Sonic, Tails, Knuckles, Shadow, Silver, Cream, Rouge, Blaze, Big and E-123 Omega
 * 3) Enemy of Dr. Eggman, Metal Sonic, Infinite

Vector The Crocodile

 * 1) Friend of Sonic, Tails, Knuckles, Shadow, Silver, Espio, Charmy, Cream, Blaze, Sticks and E-123 Omega
 * 2) Boyfriend of Vanilla
 * 3) Enemy of Dr. Eggman, Metal Sonic

Big The Cat

 * 1) Best Friend of Amy, Cream, Blaze and Froggy
 * 2) Friend of Sonic, Tails, Knuckles, Shadow, Silver, Rouge, Maria, Espio, E-123 Omega, Charmy, Vector.
 * 3) Enemy of Dr. Eggman and Metal Sonic

Orbot

 * 1) Friend of Cubot, Dr. Eggman, Metal Sonic and Infinite
 * 2) Enemies of Sonic, Tails, Knuckles, Shadow, Rouge, E-123 Omega, Amy, Sticks, Cream and Silver

Cubot

 * 1) Friend of Orbot, Dr. Eggman, Metal Sonic and Infinite
 * 2) Frienmey of Sonic and His Friends

Charmy Bee

 * 1) Friend of Sonic, Tails, Knuckles, Shadow, Silver, Espio, Vector, Blaze, Sticks, Cream and E-123 Omega
 * 2) Enemy of Dr. Eggman, Metal Sonic, Orbot, Cubot.

Metal Sonic

 * 1) Friend of Dr. Eggman, Bowser, Infinite, Orbot, Cubot, Zavok, Chaos
 * 2) Enemy of Sonic, Sticks, Shadow, Rouge, Silver, Amy, Blaze, Cream, Big, E-123 Omega, Blaze, Espio, Vector and Charmy
 * 3) Boyfriend of Breezie

Infinite The Jackal

 * 1) Enemies of Sonic, Tails, Knuckles, Silver, Shadow, E-123 Omega, Rouge, Amy, Espio, Vector, Charmy, Big, Avatar and Sonia
 * 2) Allies Of Dr. Eggman, Metal Sonic, Chaos, Zavok, Orbot, Cubot, Jackal Squad

E-123 Omega

 * 1) Best Friend of Shadow and Rouge
 * 2) Friend of Sonic, Tails, Knuckles, Amy, Blaze, Silver, Espio, Maria, Vector, Charmy, Big, Cream, Cheese, Sonia, Yuki, Haruhi and Mikuru
 * 3) Brother of E-102 Gamma
 * 4) Enemies of Dr. Eggman, Metal Sonic, Orbot, Cubot, Mephies, Infinite.

Mephiles The Dark

 * 1) Enemy of Shadow, Rouge, E-123 Omega, Silver, Blaze, Sonic, Eggman.

Vanilla The Rabbit

 * 1) Friends of Sonic and His Friends
 * 2) Mother of Cream
 * 3) Girlfriend of Vector

Cosmo The Seedrian

 * 1) Best Friends of Amy, Cream, Rouge, Blaze, Maria, Sticks, Tikal and Vanilla
 * 2) Friends of Sonic, Tails, Knuckles, Shadow, Silver, Espio, Charmy, Vector, E-123 Omega, and Big
 * 3) Friendly Wang of Tails

Sonic Underground Characters
Sonic's Family Member's back in the 1990's.

Queen Aleena The Hedgehog

 * 1) Mother of Sonic, Sonia and Manic
 * 2) Friends of Tails, Knuckles, Shadow, Silver, Amy, Rouge, Cream, Maria, Blaze, E-123 Omega, Vector and Charmy
 * 3) Enemies of Dr. Ivo Eggman, Orbot, Cubot and Metal Sonic

Sonia The Hedgehog

 * 1) Daughter of Queen Aleena
 * 2) Sister of Sonic and Manic
 * 3) Friends of Her Older Brother Sonic's Friends
 * 4) Girlfriend of Knuckles

Manic The Hedgehog dit

 * 1) Brother of Sonic And Sonia
 * 2) Son of Queen Aleena
 * 3) Friends of His Older Brother Sonic's Friends

Zavok

 * 1) Leader of Zazz, Zeena, Master Zik, Zomom and Zor
 * 2) Enemies of Sonic, Tails, Knuckles, Amy, Shadow and Avatar
 * 3) Frienemys of Dr. Eggman, Orbot and Cubot
 * 4) Allies of Metal Sonic, Infinite and Chaos

Zeena

 * 1) Friends of Zavok, Zazz, Master Zik, Zomom and Zor
 * 2) Enemies of Sonic, Tails, Knuckles and Amy
 * 3) Frienemys of Dr. Eggman, Orbot and Cubot

Master Zik

 * 1) Fouder of Zavok, Zazz, Zeena, Zomom, and Zor
 * 2) Enemies of Sonic, Tails, Knuckles and Amy
 * 3) Frienemys of Dr. Eggman, Orbot and Cubot

Zomom

 * 1) Friends of Zavok, Zazz, Zeena, Zor and Master Zik
 * 2) Enemies of Sonic and His Friends
 * 3) Frienemys of Dr. Eggman, Orbot and Cubot

Zazz

 * 1) Allies of Zavok, Zeena, Zor, Zomom and Master Zik
 * 2) Enemies of Sonic and His Friends

Zor

 * 1) Allies of Zavok, Zazz, Zeena, Master Zik and Zomom
 * 2) Enemies of Sonic and His Friends

Jackal Squad

 * 1) Enemies of Shadow
 * 2) Allies of Dr. Eggman, Infinite(leader)

Spyro the Dragon

 * 1) Best Friend of Sparx
 * 2) Boyfriend of Cynder
 * 3) Friend of Crash, Ember, Hunter, Sgt. James, Shelia, Mario and Sonic
 * 4) Enemy of Gnasty and Moneybags

Sparx the Firefly

 * 1) Best Friend of Spyro
 * 2) Friend of Ember, Hunter, Sgt. James and Shelia
 * 3) Enemy Gnasty

Sheila the Kangaroo

 * 1) Friend of Ember, Hunter, Sgt. James, Sparx and Spyro
 * 2) Enemy of Gnasty

Sgt. James Byrd

 * 1) Friend of Ember, Hunter, Sparx, Sheila and Spyro
 * 2) Enemy of Gnasty

Hunter the Cheetah

 * 1) Friend of Spyro, Sparx, Sheila, Sgt. James and Ember
 * 2) Son of Akello
 * 3) Boyfriend of Bianca

Cynder the Dragon

 * 1) Girlfriend of Spyro
 * 2) Friend of Sparx, Sheila, Sgt. James, Ember and Hunter
 * 3) Enemy of Gnasty

Gnasty Gnorc

 * 1) Enemy of Spyro and his Friends
 * 2) (Possible) Best Friend of Cortex, Dr. Eggman and Bowser
 * 3) Friend of Moneybags

Moneybags the Bear

 * 1) Friend of Gnasty
 * 2) Enemy of Spyro

Crash Bandicoot

 * 1) Brother of Coco Bandicoot
 * 2) Boyfriend of Tawna Bandicoot
 * 3) (Possible) Younger brother of Crunch Bandicoot
 * 4) Best Friend of Spyro
 * 5) Friend of Banjo, Mario and Sonic
 * 6) Enemy of Dr. Neo Cortex and his minions

Coco Bandicoot

 * 1) Sister of Crash Bandicoot
 * 2) (Possible) Sister of Crunch Bandicoot
 * 3) Girlfriend of Banjo
 * 4) Rival of Nina Cortex and N Gin
 * 5) Enemy of Cortex

Crunch Bandicoot

 * 1) (Possible) Older brother of Crash and Coco
 * 2) Friend of Tawna Bandicoot
 * 3) Enemy of Cortex
 * 4) Rival of Tiny and Koala Kong

Tawna Bandicoot

 * 1) Girlfriend of Crash Bandicoot
 * 2) Friend of Coco and Crunch
 * 3) Enemy of Cortex

Dr. Neo Cortex

 * 1) Enemy of Crash and his friends
 * 2) (Possible) Best Friend of Gnasty, Dr. Eggman and Bowser
 * 3) Friend of N Gin, Ripper Roo, Brio, Tiny, Tropy, and Dingodile

Dr. N Gin

 * 1) Best Assistant of Cortex
 * 2) Correlate of Dr. Eggman
 * 3) (Possible) Best Friend of Bowser Jr and Metal Sonic
 * 4) Enemy of Crash and his friends

Ripper Roo

 * 1) Friend of Cortex
 * 2) Enemy of Crash

Dr. Nitrus Brio

 * 1) Friend of Cortex
 * 2) Enemy of Crash and his friends

Tiny Tiger

 * 1) Best Henchman of Cortex
 * 2) Best Friend of Dingodile
 * 3) Enemy of Crash, Crunch, and other friends

Dr. Nefarious Tropy

 * 1) Friend of Cortex, N Gin, Ripper Roo, Brio, Tiny, Dingodile
 * 2) Enemy of Crash and his friends

Dingodile

 * 1) Best Henchman of Cortex
 * 2) Correlate of Bowser
 * 3) Best Friend of Tiny
 * 4) Enemy of Crash and his friends

Conker

 * 1) Criminal and Enemy to Sonic.
 * 2) Friends With Supporters of Amy Rose

Banjo

 * 1) Friend of Conker and Amy
 * 2) Boyfriend of Coco