"Graduation, Part 2" is the working title for the 52nd and final episode of Ben 10: Ultimate Alien.
Ben finally defeats Morningstar by exploding the fake Bellwood. Because of this, Tennyson is finally Magister of Earth. Max tells him that he deserves it.
- Ben Tennyson
- Gwen Tennyson
- Kevin Levin (minor appearance)
- Julie Yamamoto
- Jimmy Jones
- Alan Albright
- Helen Wheels
- Manny Armstrong
- Cooper Daniels
- Pierce Wheels (flashback only)
- Max Tennyson
- Galactic Enforcers
- Verdona Tennyson
- Jimmy Jones
- Sunny Tennyson
- Michael Morningstar
- Forever Knight Ninja
- Yuri Lowenthal as Ben Tennyson
- Ashley Johnson as Gwen Tennyson
- Greg Cipes as Kevin Levin
- Vyvan Pham as Julie Yamamoto
- Scott Menville as Jimmy Jones, Ken Tennyson
- Will Friedle as Kevin Levin (future)
- Sean Donnellan as Ben Tennyson (future)
- Tia Texada as Elena Validus, Kai Green
- Molly Quinn as Eunice
- Tara Strong as Gwen Tennyson II
- Gwen, Ben and Julie are graduated from high school in this episode.
- Ssserpent has a major appearance in this episode.
- In the epilogue scene, Ben is happily married to Kai Green and has 2 children with her: Ken and Gwen.
- In the epilogue scene, Kevin is married to Gwen and has a son, Devlin.
- In the epilogue scene, Ben is voiced by Sean Donnellan, Kai is voiced by Grey DeLisle, Ken is voiced by Scott Menville and Gwen II is voiced by Tara Strong. This is also the first time that Ben's future daughter has a speaking part.
- Victor's death is revealed to be a heart attack.
- Ben and Julie are revealed to be breaking up.
- This is also the 150th episode of the franchise.