Killer Croc

Waylon Jones, also known as Killer Croc, is a villain from the Batman series. He is a giant crocodile like man. He talks with a low, growling voice, and he hates The Batman for locking him up several times. He is known for eating humans, or parts of human bodies.

Arkham Asylum
Killer Croc makes his debut in the game quite early. You first see him when you are walking the Joker to his cell along with the Arkham guards. He steps out of an elevator, threathening the Batman when he smels him. He is then forced to keep walking because of his electric collar, which contains him. Later in the game, the player has to venture into Killer Croc`s lair, to get the antidote for the Venom poison. These plants only grow in the Killer Croc`s lair. He comes blasting out of the water, and then charges at the Batman. The player can force him away by throwing a batarang onto his electric collar. In the end, when the player is trying to escape Killer Croc`s lair, he comes charging at the Batman, who blows up the ground underneath him, so Killer Croc falls back into the deepest parts of his lair.

His profile in the videogame Batman: Arkham Asylum states:

Born with a rare mutation that made his skin green and scaly and grew his body to grotesque proportions, Waylon Jones was raised by an alcoholic aunt and bullied relentlessly for his appearance. He briefly worked as a carnival freak under the name Killer Croc, but his misanthropy grew as did his bestial nature, pushing him to a life of crime. As his physical condition and mental state deteriorate, Killer Croc becomes a more bestial foe, increasingly detached from humanity.