Once you've succesfully completed the Twisted Metal tournament, you will be granted an audience with Calypso and receive an ending that corresponds to the character you were playing as.
Twisted Metal originally had live-action endings in the game's early stages. However these endings were cut due to their potrayal of violence and sexism, and are known as the Lost Endings. The lost endings were replaced with rolling text cutscenes instead, with some of the endings being changed either slightly or completely. This page will provide you with both the beta, and final endings for all 12 contestants from the game.