May i suggest DEF-COM
(if you don't think that's too close to Devcon
According to http://tfwiki.net/wiki/Guard_City
Guard City is a redeco of the original Defensor... Guard City is composed of the following individual Autobots:
As a Free-Combiner, the individual robots making up Guard City's limbs enjoy a certain level of autonomy, allowing them to consciously rearrange themselves to suit specific situations. With Streetstar and Sparkride forming his legs, Guard City can reach incredible speeds with his Mach Formation. With Sparkride and Fly-Up forming his arms, Guard City can use their various abilities (such as Fly-Up's rotor blades) to aid him in battle with the Attack Formation. With Safety and Streetstar forming his arms, he can use the lightbars of both vehicles to make himself highly visible and demand attention during emergency situations, creating the Signal Formation. And with Safety forming one of his arms, Guard City can call upon the medic's skills to repair wounded soldiers via the Repair Formation.
According to http://tfwiki.net/wiki/Battle_Gaia
Battle Gaia is a redeco of the Combaticon combiner Bruticus. Battle Gaia is composed of five Decepticons:
As a Free-Combiner, Battle Gaia's component robots can consciously rearrange themselves into new formations in response to a certain predicament. With Shuttle Gunner and Target Hawk as his legs in the Flying Formation, he can surge upward at incredible speeds. Using Sandstorm and Leyland as his legs in the Dash Formation, his running speed increases greatly. Accessing the Crash Formation with Leyland and Target Hawk as his arms, his destructive powers are greatly enhanced. And by creating the Fire Formation with Sandstorm and Shuttle Gunner as his arms, he can utilize all the fire-power of his individual components.
According to http://tfwiki.net/wiki/Ruination_%28RID%29
[Ruination] is a redeco and slight retooling of the Combaticon molds from Generation 1. Making things worse for his opponents is his ability to swap his limbs around to adapt to whatever combat situation he finds himself in. "Flight Mission" mode puts Ro-Tor and Movor in the arm sockets, giving Ruination limited flying ability. "Land Mission" mode has Armorhide and Rollbar in arm mode, giving him increased power on the ground. This deadly combination of brains and brawn makes Ruination so fierce and powerful that even Megatron is wary around him.
http://tfwiki.net/wiki/File:Studioox_co ... whatif.jpg