Suggestions by @rockscar
6,500 suggestions
Big Chill
as Aliens in Ben 10: It's Hero Time!
Spidermonkey
as Aliens in Ben 10: It's Hero Time!
Grey Matter
as Aliens in Ben 10: It's Hero Time!
Echo Echo
as Aliens in Ben 10: It's Hero Time!
XLR8
as Aliens in Ben 10: It's Hero Time!
Upgrade
as Aliens in Ben 10: It's Hero Time!
Rath (Ben 10)
as Aliens in Ben 10: It's Hero Time!
Heatblast
as Aliens in Ben 10: It's Hero Time!
Humungousaur
as Aliens in Ben 10: It's Hero Time!
Lewis Tan
as "The Future Version Of Trios" in Ben 10: It's Hero Time!
Valorie Curry
as "The Future Version Of Trios" in Ben 10: It's Hero Time!
Sebastian Stan
as "The Future Version Of Trios" in Ben 10: It's Hero Time!
Spoiler
as "The Future Version Of Trios" in Ben 10: It's Hero Time!
Jennifer Connelly
as "Alien X" in Ben 10: It's Hero Time!
Keanu Reeves
as "Alien X" in Ben 10: It's Hero Time!
Spoiler
as "Alien X" in Ben 10: It's Hero Time!
Mason Thames
as Albeldo / Negative Ben in Ben 10: It's Hero Time!
Richard Schiff
as Magister Labrid in Ben 10: It's Hero Time!
Giancarlo Esposito
as Highbreed Commander in Ben 10: It's Hero Time!
Ke Huy Quan
as Azmuth in Ben 10: It's Hero Time!