Suggestions by @pedromoiolioliveira
11 suggestions

Julia Louis-Dreyfus
as Cobalt in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Jodi Balfour
as Agent 7 in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)
Vin Diesel
as Frakenstein Jr (voice) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Christian Convery
as Buzz Conroy (kid) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Christian Coulson
as Buzz Conroy (kid) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)
Sean Astin
as Buzz Conroy (adult) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

William H. Macy
as Timeatron in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Christopher Guest
as Timeatron in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Ed Helms
as Fluid-Man (The Impossibles) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

Nick Frost
as Coil Man (The Impossibles) in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)

John Stamos
as Multi-Man (The Impossibles in The Impossibles: Reunion Tour (Hanna-Barbera Cinematic Universe)