Exosquad - Season 1 - Eps 12: Betrayal (Into the Heart of Darkness 3)
The remnants of the ExoFleet escape and, once he has put down the mutiny, Admiral Winfield has the fleet set course for a return to Io. Marsala is taken to Phaeton, who is hesitant to believe that Marsala has changed sides. Marsala captures the rest of Able Squad, and Phaeton has Marsala conduct a brain scan of Marsh to determine if his defection is deception. When Marsala is given the opportunity to execute his fellow squad members he makes an impassioned speech regarding the plight of the Neo sapiens, but then turns against Phaeton. The rest of Able Squad rushes the guards and they take control of their location. At the end, Typhonus is sending troops to the area, giving orders to shoot to kill.
About Exosquad

Title: Exosquad
First Air Date: 1993-09-18
Last Air Date: 1994-05-01
Status: Canceled
Rating: 5.9/10 (from 16 votes)
Language: EN
Seasons: 2
Total Episodes: 52
Network: Syndication
Genres: Animation, Sci-Fi & Fantasy, Action & Adventure
Production Companies: Unknown
Synopsis
Sometime in the 22nd century, humans have fully terraformed and colonized Venus and Mars. The Neosapiens, an artificially engineered race created to be slaves for the Terrans, have turned against their masters and formed the Neosapien Order/Empire/Commonwealth. Under the rule of the calculating Governor General Phaeton, the Neosapiens have launched an invasion of Earth and Venus. The ExoFleet, the Homeworlds' space navy (in particular, Able Squad, a group of Exo-Frame pilots led by Lieutenant J.T. Marsh), fight against the invasion in an interplanetary war to protect the Terrans.
Cast

Robby Benson
Squad Leader Lt. J.T. Marsh / Jonas Simbacca (voice)

Michael Donovan
Wolf Bronski (voice)

Teryl Rothery
Lt. Maggie Weston (voice)

Lisa Ann Beley
Lt. Nara Burns (voice)

Michael Benyaer
Pilot 1C Kaz Takagi / Praetorius (voice)

Janyse Jaud
Sgt. Rita Torres (voice)

Garry Chalk
Marsala / Shiva / Charles McKenna (voice)

John Payne
Alec DeLeon / Sean Napier (voice)

Wally Marsh
Admiral Winfield (voice)

Richard Newman
Governor General Phaeton / Captain Marcus (voice)