Suggestions by @bumbleprime

Tara Strong

as Future Voice Actress of Slipstream in Future Actress and Voice Actress of Slipstream

Charlize Theron

as Future Actress of Slipstream in Future Actress and Voice Actress of Slipstream

Jeffrey Combs

as Future Voice Actors of Ratchet in Future Actor and Voice Actor of Ratchet

Greg Ellis

as Cliffjumper in Ben 10 & The Transformers (2009)

Jennifer Hale

as Slipstream in Ben 10 & The Transformers (2009)

Jim Cummings

as Thundercracker in Ben 10 & The Transformers (2009)

Richard Epcar

as Skywarp in Ben 10 & The Transformers (2009)

Jack Angel

as Astrotrain in Ben 10 & The Transformers (2009)

Rob Paulsen

as Frenzy in Ben 10 & The Transformers (2009)

David Warner

as Shockwave in Ben 10 & The Transformers (2009)

Dee Bradley Baker

as Rumble in Ben 10 & The Transformers (2009)

Jeff Bennett

as Octane in Ben 10 & The Transformers (2009)

Khary Payton

as Barricade in Ben 10 & The Transformers (2009)

Frank Welker

as Soundwave in Ben 10 & The Transformers (2009)

Tom Kenny

as Starscream in Ben 10 & The Transformers (2009)

Frank Welker

as Megatron in Ben 10 & The Transformers (2009)

Tara Strong

as Arcee in Ben 10 & The Transformers (2009)

Roger Craig Smith

as Wheeljack in Ben 10 & The Transformers (2009)

Jeff Bennett

as Prowl in Ben 10 & The Transformers (2009)

Bill Fagerbakke

as Bulkhead in Ben 10 & The Transformers (2009)