Carl Marin is the main antagonist of the Buffy the Vampire Slayer episode "Go Fish" and he was originally the coach of Sunnydale High School's swim team but had sinister plans for his team to ensure they would become winners.
He was portrayed by the late Charles Cyphers.
Biography[]
Carl Marin was employed as the coach of Sunnydale High School's swim team and was competitive man who wanted to win at any cost. Sadly, his obsession for winning was shown to go far beyond that of a normal sportsman, as he was revealed to have been pumping the swim team with illegal steroid-like drugs via the steam room, and as a result of extreme mutation caused by this drug, many of the players became Gill Monsters (which were amphibious man-beasts similar to the Creature From The Black Lagoon).
Instead of seeking medical aid for his students and facing responsibility for his actions, Carl opted for simply keeping his now monstrous players in an underground complex that he had access to via a trapdoor. When the school nurse discovers what is happening, she tries to stop Marin and save the students. Unwilling to let her stop his plans, Carl tosses her into this trapdoor, and the Gill Monsters devour her.
Buffy arrives later to talk with Carl about the strange goings-on. He pulls a gun on her, deciding she knows too much about his misdeeds (while also not realizing Buffy is the Slayer, not that it matters much in this episode), and forces her into the trapdoor...claiming that the Gill Monsters will rid him of her. He also implies that her death will be a far-from-pleasant one, by mentioning that "boys have other needs" (which is ironic, considering that Carl himself showed up just in time to prevent his own creatures from killing her only recently).
However, Buffy's friend Xander Harris arrives in time to save her; he disarms Carl and coldcocks him, then helps Buffy out of the underground complex. (Note this is the second time in one and the same episode that someone has conveniently shown up at the last possible moment to rescue Buffy, of all people, from certain doom.) Moments later, Carl knocks Xander's head in with a pipe-wrench and attacks Buffy as well, but misses her and falls in with the monsters he himself created. They mete out a somewhat-fitting demise by gnawing and clawing Carl to pieces...literally biting the hand that feeds them. (They were possibly angry with him for turning them into ugly sea monsters the way he did.)
Following Carl's demise, Xander (who had been a new recruit to the swim team) was given special treatment by Giles to ensure his exposure to Carl's drug would not have negative effects, and the rest of the swim team (now Gill Monsters) start to swim out to sea.