Suggestions by @madyibi2001

Tylan Bailey

as Dipper Pines in Gravity Falls

Tom Hardy

as Mojo Jojo in The Powerpuff Girls

John Mulaney

as Professor Utonium in The Powerpuff Girls

Maia Kealoha

as Buttercup in The Powerpuff Girls

Chicago West

as Bubbles in The Powerpuff Girls

Emily Mitchell

as Blossom in The Powerpuff Girls

Unknown Twin Actors

as Jim and Tim Possible in Kim Possible

Robert Pattinson

as James Possible in Kim Possible

Karen Gillan

as Ann Possible in Kim Possible

Travis Kelce

as Mr Barken in Kim Possible

Unknown black child actor

as Wade in Kim Possible

Miyako

as Bonnie in Kim Possible

Charlee Fraser

as Shego in Kim Possible

Zac Efron

as Dr Drakken in Kim Possible

Nancy Cartwright

as Rufus in Kim Possible

Devin Bright

as Ron Stoppable in Kim Possible

Julia Butters

as Kim Possible in Kim Possible

Druski

as Guspaccho in Chowder

Blue Ivy Carter

as Panini in Chowder

Kathryn Hahn

as Endive in Chowder