Exosquad - Season 1 - Eps 13: Defying Olympus (Into the Heart of Darkness 4)
Able Squad escapes from the brood chamber with Phaeton as a hostage (a useless one, since Typhonus wouldn't mind him dead). Once outside Phaeton tries to resist and is shot, he then falls down the mountainside. Able Squad climbs up the mountain so they can destroy the brood chamber. They then realize they can accomplish this by flooding it with magma. Phaeton returns to try to stop them, but J.T. defeats him in an e-frame battle. The mountain then explodes, and Weston and Takagi arrive just in time to pick up their fellow squad members. The episode ends with a preview for next season with Marsh and Typhonus each receiving missions from their leaders.
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)