Crocodile

The Crocodile is a character from the Neverland world, and one of Captain Hook's enemies. He acquired a taste for the pirate captain when Peter Pan chopped off the captain's hand and fed it to him. He now follows Hook around everywhere, hoping to get a second taste of the captain. The crocodile isn't quite a villain, since he primarily hunts Captain Hook, but he does attack Sora and Ventus.

The crocodile swallowed a ticking alarm clock, that now, unfortunately for the crocodile, warns Captain Hook if he is approaching. This has become something of a trademark for the crocodile, foreshadowing its arrival in a way that terrifies the captain, much to his humiliation.

Kingdom Hearts Birth by Sleep
Peter Pan (1953)

Captain Hook's most feared enemy.

Just a few ticks of the clock he swallowed are good enough to send Hook running for dear life.

Kingdom Hearts
''A seagoing reptile big enough to swallow a man whole -- and he's always hungry! He got a taste of Hook once and never forgot it. Hook can tell when he's near by the sound of the clock ticking away in his stomach.''

He had a taste for Captain Hook in "Peter Pan" (1953).

Kingdom Hearts Birth by Sleep
When Captain Hook captures Tinker Bell, Ventus tries to rescue her, and they duel on a rocky outcropping on the lagoon. As they fight, the Crocodile circles the islet, looking for a chance to bite. Ventus eventually wins the duel, and Hook is chased back to his ship by the hungry Crocodile. The pirate quickly returns to Skull Rock, where an angry Terra has just learned that Hook had tricked him into guarding the treasure Hook had stolen from the Lost Boys. Just as Hook prepares to engage Terra, the Crocodile reappears and chases him off. Hook later steals the Lost Boys' treasure chest once again and takes it to the gully, but when he opens the chest to gloat, he discovers that it only contains the children's keepsakes. Just as he begins to curse in frustration, the Crocodile reappears and scares him off.

Kingdom Hearts
After Sora and Peter Pan defeat Captain Hook, he falls into the water, only to be chased away by the Crocodile.

Le Crocodile Krokodil