Rock'em Sock'em Robots Arena

Unlock Old Red: You have to successfully complete the career mode with Red Rocker.
Unlock Old Blue: You have to successfully complete the career mode with Blue Bomber.
Unlock Ben Hurt: You have to successfully complete the career mode with with Slamuri.
Unlock Sir Haxalot: You have to successfully complete the career mode with with Head Case.
Unlock Tywrenchula: You have to successfully complete the career mode with Stakeout.

 