Series Cast 59

1. 

   Yuri Lowenthal

   Ben Tennyson (voice) (52 Episodes)

2. 

   Ashley Johnson

   Gwen Tennyson (voice) (52 Episodes)

3. 

   Greg Cipes

   Kevin Levin (voice) (52 Episodes)

4. 

   Dee Bradley Baker

   Humungosaur (voice) (52 Episodes)

5. 

   John DiMaggio

   Aggregor (voice) (5 Episodes), Vulkanus / Rath (voice) (4 Episodes), Will Harangue / Octagon Vreedle (voice) (3 Episodes), Diagon (voice) (3 Episodes), Rath / Conduit Edwards / Diagon (voice) (2 Episodes), Young Four Arms / Aggregor (voice) (1 Episode), Magister Coronach / Octagon Vreedle (voice) (1 Episode), Plumber / Aggregor (voice) (1 Episode), Swamps / Rath Albedo / V.O. Announcer (voice) (1 Episode), Forever Knight #2 / Rath / TV Reporter (voice) (1 Episode), Will Harangue / Rath (voice) (1 Episode), Addwaitya / Aggregor / Faint Voice (voice) (1 Episode), Trash Monster / Colonel Rozum / Additional Voices (voice) (1 Episode), Audience Member / Will Harangue / Rath (voice) (1 Episode), Ultimate Aggregor / Volann Commander (voice) (1 Episode), Conduit Edwards / Carnival Barker (voice) (1 Episode), Spellbinder / Addwaitya / Diagon (voice) (1 Episode), Foreverduke838 (voice) (1 Episode)

6. 

   Vyvan Pham

   Julie Yamamoto / Computer Voice (voice) (5 Episodes), Julie Yamamoto (voice) (2 Episodes), Julie Yamamoto / Ship (voice) (2 Episodes), Erin / Julie Yamamoto (voice) (1 Episode), Mrs. Jones (voice) (1 Episode)

7. 

   Paul Eiding

   Max Tennyson / Guard #1 / Guard #2 (voice) (7 Episodes)

8. 

   Peter Renaday

   Sir George (voice) (5 Episodes), Old George (voice) (1 Episode)

9. 

   Scott Menville

   Jimmy Jones (voice) (3 Episodes), Jimmy / J.T. / Pilot 2 (voice) (1 Episode), J.T. (voice) (1 Episode)

10. 

    Juliet Landau

    Natalie Tennyson / Melinda (voice) (3 Episodes), Fritz (voice) (1 Episode), Verdona Tennyson / Waitress (voice) (1 Episode)

11. 

    James Remar

    Vilgax (voice) (5 Episodes)

12. 

    Alexander Polinsky

    Argit (voice) (4 Episodes)

13. 

    Kari Wahlgren

    Charmcaster (voice) (4 Episodes)

14. 

    Fred Tatasciore

    Staradisimus / Forever Knight #3 (voice) (1 Episode), Foreman / Surgeon / Hammer (voice) (1 Episode), Quince / Robot Guard (voice) (1 Episode)

15. 

    Rob Paulsen

    Baz-El / Forever Knight #1 / Churl #4 (voice) (1 Episode), Technician / Rhomboid Vreedle / Engineer #2 (voice) (1 Episode), Rhomboid Vreedle / Magister Patelliday (voice) (1 Episode)

16. 

    David McCallum

    Professor Paradox (voice) (3 Episodes)

17. 

    Dwight Schultz

    Dr. Animo / Teacher #2 (voice) (2 Episodes), Sheriff / Dr. Animo (voice) (1 Episode)

18. 

    Jeff Bennett

    Pops Vreedle / Jailer (voice) (1 Episode), Magister Labrid / Major General (voice) (1 Episode), Major Domo / Hugh (voice) (1 Episode)

19. 

    Wil Wheaton

    Mike Morningstar / Darkstar (voice) (3 Episodes)

20. 

    Patrick Cavanaugh

    Winston / Esoterica / Additional Voices (voice) (3 Episodes)

21. 

    Chris Pratt

    Cooper (voice) (2 Episodes)

22. 

    Greg Ellis

    Prince Gyula / Cyborg #2 (voice) (1 Episode), Dagonet / Reporter Chet Rigby (voice) (1 Episode)

23. 

    Peter MacNicol

    Oliver / Forever Knight #1 (voice) (2 Episodes)

24. 

    Kevin Michael Richardson

    Magister Pyke (voice) (1 Episode), Kwarrel (voice) (1 Episode)

25. 

    Jason Marsden

    Young Max Tennyson (voice) (1 Episode), Antonio (voice) (1 Episode)

26. 

    James Arnold Taylor

    Plumber Officer / Brannigan / Kolar (voice) (1 Episode), Announcer / Fake Vilgax / Fridge (voice) (1 Episode)

27. 

    Molly C. Quinn

    Eunice / Computer (voice) (2 Episodes)

28. 

    Tia Texada

    Elena Validus (voice) (2 Episodes)

29. 

    Robin Atkin Downes

    Sir Cyrus / Additional Voices (voice) (2 Episodes)

30. 

    Richard Doyle

    Driscoll / Additional Voices (voice) (2 Episodes)

31. 

    Christopher McDonald

    Captain Nemesis (voice) (2 Episodes)

32. 

    Tara Platt

    Jennifer Nocturne (voice) (2 Episodes)

33. 

    Zeno Robinson

    Alan Albright / Heatblast (voice) (2 Episodes)

34. 

    Sean Donnellan

    Ben 10,000 / Eon (voice) (1 Episode), Cameraman / Thug / Tech (voice) (1 Episode)

35. 

    Powers Boothe

    Sunder (voice) (1 Episode)

36. 

    Peter Stormare

    King Xarion / King Viktor (voice) (1 Episode)

37. 

    Beth Littleford

    Sandra Tennyson (voice) (1 Episode)

38. 

    J.K. Simmons

    Magister Gilhil / Plumber (voice) (1 Episode)

39. 

    Nicholas Guest

    Simons / Worker / Guest (voice) (1 Episode)

40. 

    Matt Levin

    Cash (voice) (1 Episode)

41. 

    Tara Strong

    Serena / Young Ben Tennyson (voice) (1 Episode)

42. 

    Xander Berkeley

    Warden Morgg / Trukk (voice) (1 Episode)

43. 

    Brian George

    Victor Valadis / Janitor (voice) (1 Episode)

44. 

    Miguel Ferrer

    Magister Hulka / Alpha #4 (voice) (1 Episode)

45. 

    Charlie Schlatter

    Tack / Plumber (voice) (1 Episode)

46. 

    Olivia Hack

    Emily (voice) (1 Episode)

47. 

    Adam Wylie

    Pierce / Forever Knight #3 (voice) (1 Episode)

48. 

    Diedrich Bader

    Simian (voice) (1 Episode)

49. 

    Jon Polito

    Mizaru (voice) (1 Episode)

50. 

    Keone Young

    Julie's Dad / Repair Man / Cop (voice) (1 Episode)

51. 

    Yeni Alvarez

    Dr. Borges (voice) (1 Episode)

52. 

    Bill Mumy

    Agent Bryson (voice) (1 Episode)

53. 

    Vicki Lewis

    Agent Locke (voice) (1 Episode)

54. 

    Diane Delano

    Ma Vreedle / Pretty Boy Vreedle (voice) (1 Episode)

55. 

    Khary Payton

    Hex (voice) (1 Episode)

56. 

    Marianne Muellerleile

    Maureen (voice) (1 Episode)

57. 

    Danny Jacobs

    Captain / Police Dispatch / Dr. Pervis (voice) (1 Episode)

58. 

    Jim Piddock

    King Urien / Color Commentator / Chair Umpire (voice) (1 Episode)

59. 

    Tress MacNeille

    Zennith (voice) (1 Episode)

Series Crew 24