Enter at mdoe select screen:

Dave Mirra: Down, Down, Up, Right, Up, Right, Up, Up, X button
Ryan Nyquist: Down, Down, Down, Down, Down, Right, Up, Down, X button
Troy McMurray: Down, Down, Left, Down, Right, Left, Up, Left, X button
Mike Laird: Down, Down, Right, Left, Down, Up, Up, Right, X button
Tim Mirra: Down, Down, Right, Left, Down, Right, Down, Up, X button
Kenan Harkin: Down, Down, Left, Up, Down, Right, Down, Down, X button
Leigh Ramsdell: Down, Down, Down, Up, Left, Left, Down, Left, X button
Joey Garcia: Down, Down, Up, Right, Left, Left, Down, Right, X button
Rick Moliterno: Down, Down, Up, Left, Right, Right, Left, Up, X button
Todd Lyons: Down, Down, Down, Down, Left, Right, Left, Down, X button
John Englebert: Down, Down, Left, Up, Left, Up, Left, Left, X button
Scott Wirch: Down, Down, Right, Up, Down, Down, Left, Right, X button
Colin Mackay: Down, Down, Right, Right, Right, Right, Right Up, X button
Zach Shaw: Down, Down, Left, Down, Up, Right, Right, Down, X button

Enter the following codes at the mode select menu:

Dave Mirra: Left, Right, Up, Up, Left, Right, Up, Up, X button
Ryan Nyquist: Left, Right, Down, Down, Down, Up, Up, Down, X button
Troy McMurray: Left, Right, Left, Left, Up, Down, Up, Left, X button
Mike Laird: Left, Right, Right, Right, Left, Right, Up, Right, X button
Tim Mirra: Left, Right, Right, Up, Down, Up, Down, Up, X button
Kenan Harkin: Left, Right, Left, Down, Up, Down, Down, Down X button
Leigh Ramsdell: Left, Right, Down, Left, Left, Right, Down, Left, X button
Joey Garcia: Left, Right, Up, Right, Down, Up, Down, Right, X button
Rick Moliterno: Left, Right, Up, Up, Up, Down, Left, Up, X button
Todd Lyons: Left, Right, Down, Down, Left, Right, Left, Down, X button
John Englebert: Left, Right, Left, Left, Down, Up, Left, Left, X button
Scott Wirch: Left, Right, Right, Right, Up, Down, Left, Right, X button
Colin Mackay: Left, Right, Right, Up, Left, Right, Right, Up, X button
Zach Shaw: Left, Right, Left, Down, Left, Up, Right, Down, X button
Slim Jim Guy: Left, Right, Down, Left, Up, Left, Right, Left, X button
Amish Air: Left, Right, Up, Up, Right, Down, Right, Right, X button

Enter the following codes at the mode select menu:

Dave Mirra: Right, Right, Up, Right, Down, Down, Left, Left, X button
Ryan Nyquist: Right, Right, Down, Down, Left, Up, Up, Down, X button
Troy McMurray: Right, Right, Left, Up, Left, Left, Up, Left, X button
Mike Laird: Right, Right, Right, Up, Down, Down, Up, Right, X button
Tim Mirra: Right, Right, Right, Down, Down, Right, Down, Up, X button
Kenan Harkin: Right, Right, Left, Down, Up, Left, Down, Down, X button
Leigh Ramsdell: Right, Right, Down, Left, Up, Down, Down, Left, X button
Joey Garcia: Right, Right, Up, Down, Up, Right, Down, Right, X button
Rick Moliterno: Right, Right, Up, Up, Up, Right, Left, Up, X button
Todd Lyons: Right, Right, Down, Left, Left, Up, Left, Down, X button
John Englebert: Right, Right, Left, Right, Up, Up, Left, Left, X button
Scott Wirch: Right, Right, Right, Up, Left, Left, Left, Right, X button
Colin Mackay: Right, Right, Right, Left, Right, Up, Right, Up, X button
Zach Shaw: Right, Right, Left, Left, Down, Down, Right, Down, X button

Enter the following codes at the mode select screen to unlock the characters below:

Slim Jim: Left, Right, Down, Left, Up, Left, Right, Left, X

Amish Guy: Left, Right, Up, Up, Right, Down, Right, Right, X

You will hear a confirm the code was entered correctly - up, right, down, left, right, right, up down, left, right, up, left, right, right, down, x