Men in Black: The Series - Season 1 - Eps 4: The Alpha Syndrome
Investigating the theft of a Sintillian heart, Kay learns the culprit is Alpha, his former mentor and the man who left him for dead years ago. But Jay and Kay discover Alpha now has multiple body parts grafted onto his body, becoming even more dangerous.
About Men in Black: The Series

Title: Men in Black: The Series
First Air Date: 1997-10-11
Last Air Date: 2001-06-30
Status: Ended
Rating: 7.3/10 (from 180 votes)
Language: EN
Seasons: 4
Total Episodes: 53
Network: The WB
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Adelaide Productions, Columbia TriStar Television
Synopsis
A secret government organization made up of men provide intergalactic immigration services for Earth-bound aliens.
Cast

Gregg Berger
Agent K (voice)

Keith Diamond
Agent J (voice)

Charles Napier
Chief Zed (voice)

Jennifer Martin
Agent Elle (voice)

Adam Baldwin
Agent X (voice)