Killer Croc (Batman: Arkham Asylum)

Biography
Born with a rare mutation that made his skin green and scaly, and which 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.

Attributes:
 * Killer Croc has incredibly thick, tough skin and razor-sharp teeth and claws
 * An expert wrestler, his strength and stamina are at a near-superhuman level
 * Heightened senses, and extremely fast reflexes
 * Able to survive in water for extended periods of time
 * An intense hatred of humanity

Patient Interviews
N/A

Batman: Arkham Asylum
Killer Croc was one of the many inmates of Arkham Asylum at the time. He resided in the sewer system of Arkham where the staff feed him meat and just try to "forget about him". When Batman was escorting the Joker through the Intensive Care unit, Killer Croc was being escorted by some of the staff, with a shock collar around his neck to keep him under control. Croc spotted Batman and claimed that he would hunt him down and eat him very soon. Croc was taken back to his lair when the Joker took control of the Asylum. He saw Batman passing by a locked door adjacent to the sewer. Croc attempted to break through but was unsuccessful, again claiming that he would get Batman soon.

Eventually, Batman was forced to enter Croc's lair in order to retrieve the anti-Venom. He followed the Scarecrow down into the sewers who threatened to dump his fear gas into the water supply, which would lead straight to Gotham's. Before he could do so, however, Croc jumped out of the water and grabbed Scarecrow. Batman attempted to subdue Croc by activating his shock collar with a batarang. Croc flinched for a moment before jumping back into the water, dragging Scarecrow with him. Batman made his way to Croc's lair, where Croc attacked him several times, only to be foiled by Batman activating his shock collar with batarangs. Eventually, Croc cornered Batman at the entrance of the lair and charged at him. Unbeknownest to him, Batman had laced the floor with his explosive gel and detonated it when Croc ran across it. Croc plummeted into the water below vowing revenge on Batman.

In one of the three alternate endings after the credits, Killer Croc emerges from the water by the docks and grabs onto a floating case of TITAN venom.