Ben 10: Ultimate Alien

Yuri Lowenthal

Ben Tennyson (voice)

Ashley Johnson

Gwen Tennyson (voice)

Greg Cipes

Kevin Levin (voice)

Dee Bradley Baker

Humungosaur (voice)

John DiMaggio

Aggregor (voice), Vulkanus / Rath (voice), Diagon (voice), Will Harangue / Octagon Vreedle (voice), Rath / Conduit Edwards / Diagon (voice), Conduit Edwards / Carnival Barker (voice), Magister Coronach / Octagon Vreedle (voice), Audience Member / Will Harangue / Rath (voice), Plumber / Aggregor (voice), Young Four Arms / Aggregor (voice), Trash Monster / Colonel Rozum / Additional Voices (voice), Ultimate Aggregor / Volann Commander (voice), Forever Knight #2 / Rath / TV Reporter (voice), Swamps / Rath Albedo / V.O. Announcer (voice), Spellbinder / Addwaitya / Diagon (voice), Will Harangue / Rath (voice), Foreverduke838 (voice), Addwaitya / Aggregor / Faint Voice (voice)

Jeff Bennett

Azmuth (voice), Major Domo / Hugh (voice), Magister Labrid / Major General (voice), Pops Vreedle / Jailer (voice)

Vyvan Pham

Julie Yamamoto / Computer Voice (voice), Julie Yamamoto / Ship (voice), Julie Yamamoto (voice), Mrs. Jones (voice), Erin / Julie Yamamoto (voice)

Paul Eiding

Max Tennyson / Guard #1 / Guard #2 (voice)

Peter Renaday

Sir George (voice), Old George (voice)

Scott Menville

Jimmy Jones (voice), Jimmy / J.T. / Pilot 2 (voice), J.T. (voice)

Juliet Landau

Natalie Tennyson / Melinda (voice), Verdona Tennyson / Waitress (voice), Fritz (voice)

James Remar

Vilgax (voice)