Fat T

was the leader of the T's.

History
When the Jokerz hijacked an experimental military aircraft and decided to attack their rivals, the T's, Batman learned what they were up to and went ahead to warn them at their subway headquarters. Fat T refused to accept his demands to leave, attacking him with the pool cue he had just been using, but proved to be no match for him. After a few of his fellow T's followed their leader's example, they evacuated just before the Jokerz arrived.

Batman Beyond

 * "Joyride"