Tri-Pods are Martian semi-mechanic beings resembling huge saucers atop three legs with an underside for hostages. Their first transformation is as a giant iPod mobile phone that plays Karma Chameleon by Boy George before hitting "destroy" and going into attack mode. They have got a powerful laser cannon that destroys organic material (leaving behind clothes and jewelry), tentacles for grabbing and abducting hostages and three long legs with claws for maneuverability. They are used to invade planets. The major Tri-Pod is piloted by Billy the doll; he possibly controls the other via remote control.
The Tri-Pods only appeared in Scary Movie 4.