In New York level, if you fall to your death to the left of where the locker room/pool exit is you will see the camera zoom out and reveal a code with the lights below.
In the New York and Anartica levels, the players and enemies could fall to their death by driving fast into the abyss.
Darryl Peterson aka Maxx Payne of WCW lent his voice to the game but it ended up not being used.
Minion and Sweet Tooth are unlockable characters at the character selection screen however they don't come with passwords.
Pitviper doesn't appear in Twisted Metal 2 however Grasshopper is considered to be her replacement however instead of shooting slime blobs Grasshopper leaps into the air and does ram damage as her special weapon.