Suggestions by @emersonchavez1

Manic The Hedgehog

as Oh Il-Nam in Sonic The Hedgehog as Squid Game

Jax (Mortal Kombat Legends)

as Knuckles The Echidna in Sonic The Hedgehog characters as Mortal Kombat characters

Sonic the Hedgehog (Character)

as Knuckles The Echidna in Sonic The Hedgehog characters as Mortal Kombat characters

Espio the Chameleon

as Guile in Sonic the Hedgehog characters as Street Fighter characters

Green Lantern (Kyle Rayner)

as Silver The Hedgehog in Green Lantern Characters as Sonic The Hedgehog Characters

Mephiles the Dark

as Mahito in Sonic The Hedgehog characters as Jujutsu Kaisen characters

Silver the Hedgehog

as Jogo in Sonic The Hedgehog characters as Jujutsu Kaisen characters

Espio the Chameleon

as J. Jonah Jameson in Sonic The Hedgehog Characters as Spider-Man Characters

Sonic the Hedgehog (Character)

as The Spider-Man in What if Sonic characters were to play as Spider-Man characters

Toji Fushiguro

as Legend Edward in Legend Character As Sonic Character

Professor Gerald Robotnik

as Toji Fushiguro in Sonic the Hedgehog X Jujutsu Kaisen