Ben Tennyson (voice)
Gwen Tennyson (voice)
Kevin Levin (voice)
Swampfire / Echo Echo / Humungousaur / DNAlien (voice) / DNAlien / Jet Ray / Swampfire / Upchuck / Human Cannon Bolt / Waybig / Humungousaur (voice)
Max (voice) / Max / Alien Serf (voice)
Ghostfreak (voice) / Azmuth (voice)
HighBreed / Forever Knight #5 / Sensei (voice) / DNAlien / Officer (voice)
DNAlien #3 / HighBreed Commander / Big Ship (voice) / HighBreed Commander / Forever Knight #2 / Guard (voice)
Julie / Ship (voice) / Ship / Myaxx (voice)
Rath (voice) / Vulkanus (voice)
Darkstar (voice) / Mike Morningstar (voice)
Alan Albright (voice) / Alan (Heatblast II) (voice)
Paradox (voice)
Helen (voice) / Natalie / Energy Verdona (voice)
Manny (voice)
HighBreed Guard (voice) / Forever Knight #3 / Counterman (voice)
Pierce (voice)
Forever Knight #1 / Forever Knight #2 / Jailer (voice) / Squire (voice)
Cooper (voice)
Vilgax (voice)
Dr. Chadwick / Knight #2 (voice)
Serena (voice)
Bellicus / Warrior 2 (voice)
JT (voice)
