Suggestions by @sebaamar
784 suggestions
Michael Caine
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Brian Cox
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Alfred Molina
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Kevin Dunn
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
John Turturro
as Dr. Animo in Ben 10 TV show
John Cleese
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Simon Pegg
as Dr. Animo in Ben 10 TV show
Willem Dafoe
as Dr. Animo in Ben 10 TV show
Jim Carrey
as Dr. Animo in Ben 10 TV show
Steve Buscemi
as Dr. Animo in Ben 10 TV show
Martin Sheen
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Andy Serkis
as Dr. Animo in Ben 10 TV show
Michael Keaton
as Dr. Animo in Ben 10 TV show
David Bradley
as Dr. Animo in Ben 10 TV show
Michael Rooker
as Dr. Animo in Ben 10 TV show
Clancy Brown
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Mandy Patinkin
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Stacy Keach
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Jeffrey Tambor
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)
Michael McKean
as Grandpa Max Tennyson in Ben 10 (Live Action tv show)