Plot: An old enemy emerges while Ben and Rook visit Kevin and Gwen at college.
Cast
Yuri LowenthalBen Tennyson (voice)Yuri Lowenthal was 42 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Fri, Mar 05 1971
Tara StrongYoung Ben Tennyson (voice)Tara Strong was 41 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Mon, Feb 12 1973
Bumper RobinsonRook Blonko (voice)Bumper Robinson was 39 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Wed, Jun 19 1974
Paul EidingGrandpa Max (voice)Paul Eiding was 56 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Thu, Mar 28 1957
David KayeCannonbolt / Heatblast / Khyber the Huntsman (voice)David Kaye was 49 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Wed, Oct 14 1964
John DiMaggioArmodrillo / Fourarms (voice)John DiMaggio was 45 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Wed, Sep 04 1968
Eric BauzaDr. Psychobos / Diamondhead / Grey Matter (voice)Eric Bauza was 34 in Ben 10 Omniverse - Season 5 - Mystery, Incorporeal (Episode 2).
Birthday: Fri, Dec 07 1979