Top: McDonald's Transformers: Armada Megatron Happy Meal toy
Bottom: Microwave turntable piece
Codename P.A.C. Rat Artillery
Primary Function: Programmable Attack Robotic Artillery
Secondary: Anti-Air
Data: P.A.C. Rats are used when members of the G.I. Joe team can't be or need to be supported. P.A.C. - Programmable Attack Computer, originally introduced during the team's smaller days to provide extra firepower when there wasn't enough Joes to do so.
The first generation of P.A.C. Rats were simple: Missile unit, Flamethrower unit, and Machine Gun unit. Recently a fourth design, completely different from it's brethern/predecessors has been introduced: Artillery.