L8-L9 - "Head"
Darth Maul - Legs
Iron Grenadier - Missile Launcher Body
Data-Viper - Missile Racks
FX-6 - Manipulator Arms

The accessory for Glitch 3.0 came out so well, in my opinion, I thought it deserved its own entry.

Glitch rebuilt himself from SWARM and BAT technology after Resurgence 2, and the result was a highly modular exo-skeleton that, in some configurations, could operate completely independently.

The Clone Wars Darth Maul lower bodies made great spider legs with the parts slightly rearranged, and I was pretty happy with the different ways BUGS and GLITCH could interact.