Main Characters
- Ben Tennyson
- Kate Snyder
- Zack Taluno
TBA
Recurring Characters
- Kevin Levin
- Gwen Tennyson
- Azmuth
TBA
Season One Villains
- Vilgax
- Skelefreak
- Razol
- Eternity Warriors
- Enoch
- Sir Cyrus
- Driscoll
- King Tierasel
Season Two Villains
TBA
New Aliens
- Mantaboost
- Freezer-Dude
- Impactzoid
- Gill Fin
- Rupture
- Turboz
- Aqua Turaz
- Insectawaste
- Spectzor
- Hardware
- Sprectal
- Megazron
- Neg-Angel
- Invisiferno
- Shortshock
- Metalshrink
- Alien 23
- Alien 23's Voices:
- Ben 23 - The Voice Of Reason
- Serena - The Voice Of Love
- Bellicus - The Voice Of Aggresion
- Fortiter - The Voice Of Bravery
- Luous - The Voice Of Fun
- Livorr - The Voice Of Spite
- Heroicis - The Voice Of Epicness
- Sparticus - The Voice Of Battle
- Limoura - The Voice Of Logic
"Hyper" Aliens
- Hyper Turboz
- Hyper Hardware
- Hyper Impactzoid
- Hyper Freezer-Dude