Enter this code at the main menu screen. You should hear a sound if entered correctly

Unlock Everything
Hold in the L trigger and press A, X, Y, B, A, X, Y, B


Create A Character With These Names To Get These Effects
mstapley - Another Toon Backgraounds (Xbox Only)
tpiperi - Big Feet
okendall - Big Hands
tho - Big Hands, Big Feet, Big Heads
rtaylor - Big Heads
edma - First Person Camera
pjefferies - Ghost
ksimeonov - Grey Scale
jgintu - Halo
mbilodeau - Toon Backgraounds (Xbox Only)
pstapley - Toon Character (Xbox Only)
ewilliams - Wire Frame


To Unlock the Following Characters all you need to do is complete these stages(You do not have to complete the Talk Show Mode to get these characters).

All Other Characters
To Get All The Other Characters Just Complete Talk Show Mode With Any Of The Starting Characters.

Dameon Redd
Go Through Talk Show Mode with JCW's Evil Dead and beat him in the Slaughter House Stage.

El Drunko
Go Through Talk Show Mode with Karnage and beat him in the TruckStop Stage.

Madrox
Go Through Talk Show Mode with Sabu and beat him in the Gentleman's Club Stage.

Masked Horn Dog
Go Through Talk Show Mode with Masked Mike and beat him in the Backyard Stage.

Movies
To Get The Movies Just Complete All The Extra Goals.

Sally
Go Through Talk Show Mode with Violent J and Beat her in the Mansion Stage.

Stages
Just Complete Each Stage To Unlock Them.

Tom Dub
Go Through Talk Show Mode with Mad Man Pondo and beat him in the Talk Show Stage.

Tylene Buck
Go Through Talk Show Mode with Shaggy 2Dope and beat her in the Shopping Mall Stage