Warphead

Must remain in base contact with the Weirdboy at all times. If they are killed, the Weirdboy must move to the nearest table edge as fast as possible. Once he leaves the battle he will not come back

Madboyz can take Leadership tests using the Warphead's Leadership of 8 if he is within 2" of them, even though Madboyz can't normally benefit from another character's higher Leadership characteristic.