Play As House Robots
To unlock the House Robots in the robot select, all you have to do is complete the mayhem mode in the games section.

HINT-get away from other robots and let them destroy each other rather than you.

HINT2-the only way to destroy the house robots is by pushing them in the arena pit.

101
Defeat 101 in championship mode.

Behemoth
Defeat Behemoth in championship mode.

Cassius Ii
Defeat Cassius II in championship mode.

Chaos 2
Defeat Chaos 2 in championship mode.

Hypno-disc
Defeat Hypno-Disc in championship mode.

Mortis
Defeat Mortis in championship mode.

Onslaught
Defeat Onslaught in championship mode.

Panic Attack
Defeat Panic Attack in championship mode.

Plunderbird 4
Defeat Plunderbird 4 in championship mode.

Pussycat
Defeat Pussycat in championship mode.

Razer
Defeat Razer in championship mode.

Stinger
Defeat Stinger in championship mode.

Terrorhurtz
Defeat Terrorhurtz in championship mode.

Robot Mayhem Mode
Wait for other Robots to appear so they can fight each other. Push disabled Robots into the pit.