Suggestions by @cartoonmultiverse

Aang

as Aang in Tmnt & Mlp: Canon Demis

Miles Morales (Spider-Verse)

as Miles Morales in Tmnt & Mlp: Canon Demis

He Who Remains (Marvel Cinematic Universe)

as He who remains in Tmnt & Mlp: Canon Demis

Natsu Dragneel

as Natsu in Tmnt & Mlp: Canon Demis

Spider-Man 2099 (Spider-Verse)

as Miguel O’Hara in Tmnt & Mlp: Canon Demis

Donatello (TMNT 2014)

as Donnie (Bayverse) in Tmnt & Mlp: Canon Demis

Raphael (TMNT 2014)

as Raph (Bayverse) in Tmnt & Mlp: Canon Demis

Leonardo (TMNT 2014)

as Leo (Bayverse) in Tmnt & Mlp: Canon Demis

Donatello (TMNT 2012)

as Donnie in Tmnt & Mlp: Canon Demis

Raphael (TMNT 2012)

as Raph in Tmnt & Mlp: Canon Demis

Michelangelo (TMNT 2012)

as Mikey in Tmnt & Mlp: Canon Demis

Pinkie Pie

as Pinkie Pie in Tmnt & Mlp: Canon Demis

Rarity (My Little Pony)

as Rarity in Tmnt & Mlp: Canon Demis

Applejack

as Applejack in Tmnt & Mlp: Canon Demis

Rainbow Dash

as Rainbow Dash in Tmnt & Mlp: Canon Demis

Fluttershy

as Fluttershy in Tmnt & Mlp: Canon Demis

Twilight Sparkle

as Twilight Sparkle in Tmnt & Mlp: Canon Demis

Michelangelo (TMNT 2014)

as Mikey (Bayverse) in Tmnt & Mlp: Canon Demis

Leonardo (TMNT 2012)

as Leo in Tmnt & Mlp: Canon Demis

Deadpool (Marvel Cinematic Universe)

as Wade Wilson/Deadpool in Avengers Dissemble