Beast Wars: Transformers - Season 1 - Eps 8: Double Jeopardy
After repeated ambushes by the Predacons, this time costing the Maximals a stasis pod, Optimus calls Rattrap's loyalty into question, and sends him off into Predacon territory to look for energon. Once there, he is attacked by Terrorsaur, and offers to surrender... and become a Predacon.
About Beast Wars: Transformers

Title: Beast Wars: Transformers
First Air Date: 1996-04-22
Last Air Date: 1999-05-07
Status: Ended
Rating: 8.131/10 (from 291 votes)
Language: EN
Seasons: 4
Total Episodes: 52
Network: YTV Syndication
Genres: Animation, Action & Adventure
Production Companies: Mainframe Entertainment, Hasbro, Alliance Atlantis, Alliance Films
Synopsis
Two spaceships, one manned by benevolent Maximals, the other by evil Predacons, crash-land on a pre-humanoid planet while en route to Earth. Their crews assume indigenous animal forms to protect themselves from an overabundance of natural energy, transforming into robots to do battle. Thus, the Beast Wars have begun...
Cast

Garry Chalk
Optimus Primal (voice)

David Kaye
Megatron (voice)

Colin Murdock
Quickstrike (voice)

Scott McNeil
Dinobot / Rattrap / Waspinator (voice)

Ian James Corlett
Cheetor (voice)

Richard Newman
Rhinox (voice)

Venus Terzo
Blackarachnia (voice)

Jim Byrnes
Inferno (voice)

David Sobolov
Depth Charge (voice)

Campbell Lane
Rampage (voice)