: Episodes 1, 7, 13. Season 2 – Ghostfreak Arc (Episodes 14–26) Focuses on Zs’Skayr (Ghostfreak’s true form) escaping the Omnitrix.
| Ep # | Title | |------|-------| | 40 | Perfect Day | | 41 | Undercover | | 42 | The Unnaturals | | 43 | Monster Weather | | 44 | The Soda Popinski | | 45 | Ben 10: Destroy All Aliens (movie – canon) | | 46 | Ken 10 (Ben’s son) | | 47 | Ben 10: Race Against Time (live-action movie – alternate timeline) | | 48–52 | Goodbye and Good Riddance (alternate ending – non-canon) | ben 10 episodes
: 27, 31–32, 34, 39. Season 4 – Final Episodes & Setup for Alien Force (Episodes 40–52) Lighter tone, more filler, but includes series finale. : Episodes 1, 7, 13
| Ep # | Title | |------|-------| | 14 | Truth | | 15 | The Big Tick | | 16 | Framed | | 17 | Gwen 10 (non-canon alternate timeline) | | 18 | Grudge Match | Kevin returns | | 19 | The Galactic Enforcers | | 20 | Camp Fear | | 21 | Ultimate Weapon | | 22 | Tough Luck | | 23 | They Lurk Below | | 24 | Ghostfreaked Out | Zs’Skayr escapes | | 25 | Dr. Animo & the Mutant Ray | | 26 | Back with a Vengeance | Vilgax & Kevin team up | Season 4 – Final Episodes & Setup for