Ben's Team

Members in []

1. Ben
2. Courtney
3. Mario [Temporarily]
4. Mr.Green
5. San
6. Niagra [After Mario Leaves]
7. Lenny

Member's in Team Tennyson

1. Ben Tennyson
2. Gwen Tennyson
3. Kevin Levin
4. Elena
5. Max Tennyson
6. Stu
7. Tini
8. Ultimus
9. Synaptak
10. Courtney
11. Ship
12. Julie
13. Verdona (Only in Ben 10, BC)
14. Cooper
15. Alan Albright
16. Wes Green (Only Once)
17. Helen Wheels
18. Manny Armstrong
19. Lucy Mann
20. Pierce
21. Xylene
22. Tetrax
23. Betty Jean Tennyson (Only in Ben 10, BC)
24. Gordon Tennyson (Only in Ben 10, BC)
25. Joel Tennyson (Only in Ben 10, BC)
26. Kai Green
27. Brittney
28. Bivalvan
29. P'andor

1. Andreas
2. Galapagus
3. Ra'ad
4. Paradox
5. Zac (Zac 10) (confirmed)

Ken's Team

• Ken
• Ben
• Gwendolyn
• Max
• Stu
• Julie
• Ship
• Tetrax
• Galactic Enforcers
• Tara

Members in Ben 10: Ultimate Fusetrix

• Ben
• Gwen
• Kevin
• Zs'Skayr
• Aggregor
• Rex
• Ship
• Shipett
• Mech
• Julie
• Ken
• Kenny
• Jenny
• Azmuth
• Myaxx
• Eunice
• Diagon
• Tetrax
• Gluto
• Sugilite
• Cooper
• Pierce
• Manny
• Helen
• Ultimos
• Tini
• Synaptak
• Dan
• Max
• Hent
• Mumfry
• Charmcaster
• Spellbinder
• Grandpa Max
• Baz El
• Lady
• Tack Junior
• Tack
• Mrs. Tack
• Magister Hulka
• Magister Korwak
• Magister Runoff
• Magister Patelay

Ben's Youngster Team

• Ben (10-year old)
• Gwen
• Kevin
• Max

  

  Main Team. (credits goes to someone on deviantART)

10 Squad

Ben 10: Alien Universe

• Ben 10 (15-year old)
• Gwen Tennyson
• Kevin Levin
• Julie Yamamoto (Ben 10: Unleashed)
• Maxwell "Grandpa Max" Tennyson (Season 2-)
• Cadden "Cad" Bolt (Ben 10: Hidden Universe)
• Traxel Shard (Ben 10: Hidden Universe)

Back in Action: Alien Universe

• Ben Tennyson (16, later 17 years old)
• Gwen Tennyson (16, later 17 years old)
• Kevin Levin (18 years old)
• Julie Yamamoto (16, later 17 years old)
• Chelsey Tennyson (21 years old)
• Cooper Daniels (16 years old)
• Max Tennyson (67 years old)
• Ken (<1 year old)
• Ship (2 years old)
• Rook Blonko (unknown)