Sonic/Mario

Version 1 (DO NOT EDIT! YOU KNOW RULES!)

 * Sonic as Mario
 * Knuckles as Luigi
 * Tails as Yoshi
 * Sally as Princess Peach (Both are princesses)
 * Bunnie as Princess Daisy (Both are sidekicks to Sally and Peach)
 * Amy as Birdo (Both are sister figures to Tails and Yoshi)
 * Big as Pianta
 * Shadow as Wario
 * Silver as Waluigi
 * Rouge as Candy Kong
 * E-123 Omega as Petey Piranha
 * Espio as Chunky Kong
 * Charmy as Diddy Kong
 * Vector as Donkey Kong
 * Dr. Robotnik (AoStH)/Dr. Eggman as Bowser
 * Scratch as Lemmy "Hip" Koopa
 * Grounder as Iggy "Hop" Koopa
 * Coconuts as Larry "Cheatsy" Koopa
 * Robotnik Jr. as Morton "Big Mouth" Koopa Jr.
 * Breezie as Wendy "Kootie Pie" O Koopa
 * Snively as Ludwig "Kooky" Von Koopa
 * Bark as Roy "Bully" Koopa
 * Super Robotnik as Giga Bowser
 * Dr. Robotnik (SatAM/SU) as Smithy
 * Music Destroyer as King Boo
 * Dr. Quark as Popple
 * Doofus as Rookie
 * Antoine as Oogtar
 * Rotor as Toad
 * Cream as Toadette
 * King Acorn as Toadsworth
 * Maria Robotnik as Princess Rosalina
 * Metal Sonic as Bowser Jr.
 * Mighty as Red Yoshi
 * Ray as Yellow Yoshi

Version 2

 * Sonic the Hedgehog as Mario
 * Shadow the Hedgehog as Luigi
 * Silver the Hedgehog as Dr. Mario
 * Miles Tails Prower as Yoshi
 * Amy Rose as Princess Peach
 * Blaze the Cat as Princess Daisy
 * Breezie as Birdo
 * Chip as Toad
 * Knuckles the Echidna as Wario
 * Dr. Robotnik (AoStH)/Dr. Eggman as Bowser
 * Scratch as Lemmy "Hip" Koopa
 * Grounder as Iggy "Hop" Koopa
 * Coconuts as Larry "Cheatsy" Koopa
 * Robotnik Jr. as Morton "Big Mouth" Koopa Jr.
 * Snively as Ludwig "Kooky" Von Koopa
 * Breezie as Wendy "Kootie Pie" O Koopa
 * Dr. Warpink as Roy "Bully" Koopa
 * Dr. Robotnik (SatAM/SU) as Smithy
 * Super Robotnik as Giga Bowser
 * Mama Robotnik as Bowletta
 * Chris Thorndyke as Oogtar
 * Uncle Chuck as Toadsworth
 * Vector the Crocodile as Donkey Kong
 * Charmy Bee as Diddy Kong
 * Espio the Chameleon as Shy Guy
 * Maria Robotnik as Princess Rosalina
 * Metal Sonic the Hedgehog as Bowser Jr.
 * Mighty as Red Yoshi
 * Ray as Yellow Yoshi

Version 3 (by StarFleet) (DO NOT EDIT!)
Date Submitted: October 31, 2010
 * Sonic as Mario
 * Tails as Luigi
 * Knuckles as Yoshi
 * Amy Rose as Princess Peach
 * Cream as Princess Daisy
 * Shadow as Wario
 * Rouge as Birdo (both have similar voice pitches)
 * Big as Pianta
 * E-123 Omega as Petey Piranha
 * Silver as Waluigi
 * Blaze as Princess Rosalina
 * Vector as Donkey Kong
 * Espio as Shy Guy
 * Charmy as Diddy Kong
 * Mighty as Red Yoshi
 * Ray as Yellow Yoshi
 * Dr. Eggman as Bowser
 * Metal Sonic as Bowser Jr.

Version 4 (By PrimeThomasFans)

 * Sonic as Mario
 * Knuckles as Luigi
 * Dr. Robotnik as Bowser
 * Tails as Yoshi
 * Amy Rose as Princess Peach
 * Princess Blaze as Princess Daisy
 * Cream as Birdo
 * Rotor as Toad
 * Grounder as Wario
 * Scratch as Waluigi
 * Coconuts as Bowser Jr.
 * Antoine as Oogtar
 * Chuck Thorndyke as Toadsworth
 * Vector as Donkey Kong
 * Charmy as Diddy Kong
 * Espio as Chunky Kong
 * Bunnie as Princess Rosalina

Version 5

 * Sonic as Mario
 * Shadow as Luigi
 * Silver as Dr. Mario
 * Tails as Yoshi
 * Knuckles as Wario
 * Rouge as Pauline
 * E-123 Omega as Peta Piranha
 * Amy Rose as Princess Peach
 * Cream as Princess Daisy
 * Big as Pianta
 * Chunky Kong as Espio
 * Diddy Kong as Charmy
 * Donkey Kong as Vector
 * Dr. Robotnik as Bowser
 * Scratch as Lemmy "Hip" Koopa
 * Grounder as Iggy "Hop" Koopa
 * Coconuts as Larry "Cheatsy" Koopa

Version 6

 * Sonic as Mario
 * Tails as Yoshi
 * Knuckles as Wario
 * Jet as Kamek
 * Wave as Kammy
 * Storm as King Boo
 * Dr. Robotnik as Bowser
 * Scratch as Blue Koopa Kid
 * Grounder as Green Koopa Kid
 * Coconuts as Red Koopa Kid
 * Robotnik Jr. as Normal Koopa Kid
 * Snively as Mouser
 * Breezie as Pom Pom
 * Shadow as Luigi
 * Silver as Dr. Mario
 * Rouge as Candy Kong
 * Petey Piranaha as E-123 Omega
 * Amy as Peach
 * Cream as Daisy
 * Big as Chunky Kong
 * Espio as Funky Kong
 * Charmy as Diddy Kong
 * Vector as Donkey Kong
 * Vanilla as Candy Kong
 * Metal Sonic as Bowser Jr.
 * Wisps as Lumas

Version 7 (ZacharySwainGood1)

 * Sonic as Mario
 * Tails as Yoshi
 * Shadow as Luigi
 * Silver as Dr. Mario
 * Knuckles as Wario
 * Amy Rose as Princess Peach
 * Rouge as Birdo (both have similar voice pitches)
 * Blaze as Princess Daisy
 * Lucas as Waluigi
 * Vector as Donkey Kong
 * Dr. Robotnik (AoStH)/Dr. Eggman as Bowser
 * Scratch as Lemmy "Hip" Koopa
 * Grounder as Iggy "Hop" Koopa
 * Coconuts as Larry "Cheatsy" Koopa
 * Snively as Ludwig "Kooky" Von Koopa
 * Breezie as Wendy "Kootie Pie" O Koopa
 * Robotnik Jr. as Morton "Big Mouth" Koopa Jr.
 * Dr. Warpink as Roy "Bully" Koopa
 * Dr. Robotnik (SatAM/SU) as Smithy
 * Super Robotnik as Giga Bowser

Version 8

 * Sonic as Mario
 * Rotor as Luigi
 * Tails as Yoshi
 * Rouge as Birdo
 * Amy Rose as Princess Peach
 * Princess Sally Acorn as Princess Daisy (they're both princesses with brown hair)
 * Charmy as Toad
 * Cream as Toadette
 * Knuckles as Donkey Kong
 * Shadow as Wario
 * Silver as Waluigi
 * Dr. Eggman as Bowser

Version 9

 * Sonic as Mario
 * Knuckles as Luigi
 * Amy as Peach
 * Rouge as Daisy
 * Charmy as Toad
 * Cream as Toadette
 * Tails as Yoshi
 * Cosmo as Birdo
 * Dr. Eggman as Wario
 * Snively as Waluigi
 * Shadow as Bowser
 * Silver as Bowser Jr.
 * Scratch as Lemmy "Hip" Koopa
 * Grounder as Iggy "Hop" Koopa
 * Coconuts as Larry "Cheatsy" Koopa

Version 10 (By Miru96, do not edit or delete)

 * Sonic as Mario
 * Jet as Larry "Cheatsy" Koopa
 * Omega as Morton "Bigmouth" Koopa
 * Rouge as Wendy "Kootie Pie" O Koopa
 * Orbot as Iggy "Hip" Koopa
 * Silver as Roy "Bully" Koopa
 * Cubot as Lemmy "Hop" Koopa
 * Shadow as Ludwig "Kooky" Von Koopa
 * Eggman as Bowser
 * Blaze as Peach

Parodies

 * Sonic & Tails: Partners in Time
 * Sonic & Knuckles: Superstar Saga