Color-Coded Multiplayer: Billy and Jimmy are palette swaps once again, much like they were in the original arcade game (before having their different hair styles and switching colors).Cloning Blues: Averted with Bimmy and Jammy, who don't seem to have the mental capacity for such concepts.Normally, when it's used out of a chest's proximity, Billy/Jimmy thrusts the key into the air (dealing little damage to anything in its way), confusedly turns it, faces the screen and says "What the?"/"What the butt?". Cherry Tapping: There's an achievement for killing an enemy with the key that you can use to unlock chests.Billy and Jimmy have several of their own (especially when using the baseball bat). Catchphrase: Abobo likes to shout his name as he appears.
Beware the Silly Ones: Skullmageddon is essentially a ridiculously silly 80's cartoon supervillain, note He even sounds like Skeletor! but he is also a legitimately rock hard fighter.