Weapon X, Lies, and Video Tape - S3-E19
Trivia: During Wolverine and Sabretooth's first joint flashback, they are shown stealing a device from Omega Red labeled "C-Synt." This is short for Carbonadium Synthesizer, which in the comics is capable of damaging Wolverine's healing factor as well as protecting Omega Red from his own "death factor." (00:08:00)