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Appearances
Ben 10: Omniverse
Guest cast, played by David McCallum
- Episode 2x08: Ben Again (Jan 19, 2013)
- Episode 6x01: And Then There Were None (Oct 6, 2014)
- Episode 6x02: And Then There Was Ben (Oct 7, 2014)
- Episode 8x03: Let's Do the Time War Again (Nov 5, 2014)
- Episode 8x04: The Secret of Dos Santos (Nov 6, 2014)
- Episode 8x10: A New Dawn (Nov 14, 2014)