Suggestions by @jamesthethinker

Shaggy Rogers

as Mystery Inc. in Characters Sorted by Groups

Scooby-Doo (character)

as Mystery Inc. in Characters Sorted by Groups

Wrinkly Kong

as The DK Crew in Characters Sorted by Groups

Momo (Avatar: The Last Airbender)

as Team Avatar in Characters Sorted by Groups

Appa (Avatar the Last Airbender)

as Team Avatar in Characters Sorted by Groups

Jetfire

as Autobots in Characters Sorted by Groups

Chromia (Transformers)

as Autobots in Characters Sorted by Groups

Kup (Transformers)

as Autobots in Characters Sorted by Groups

Cliffjumper (Transformers)

as Autobots in Characters Sorted by Groups

Starscream

as Decepticons in Characters Sorted by Groups

Optimus Prime

as Autobots in Characters Sorted by Groups

Blue Beetle (Jaime Reyes)

as Teen Titans (Comics) in Characters Sorted by Groups

Robin (Damian Wayne)

as Teen Titans (Comics) in Characters Sorted by Groups

Robin (Dick Grayson)

as Teen Titans (Comics) in Characters Sorted by Groups

Roy Harper (Speedy/Arsenal)

as Teen Titans (Comics) in Characters Sorted by Groups

Wonder Girl

as Teen Titans (Comics) in Characters Sorted by Groups

Aqualad

as Teen Titans (Comics) in Characters Sorted by Groups

Bolin (The Legend of Korra)

as Team Avatar in Characters Sorted by Groups

Asami Sato

as Team Avatar in Characters Sorted by Groups

Suki (Avatar)

as Team Avatar in Characters Sorted by Groups