I have with me an OC I made a while back using Sketchup and Kerkythea. I originally uploaded this guy on Deviantart with all of his details like his bio.
Here's his bio for those interested
Switchbrake was just an ordinary Energon supply deliverybot until a Decepticon ground detachment led by Soundwave attacked his Energon depot. Soundwave and his minions took whatever Energon they could find and left the area, leaving only a few unarmed Autobots to live. Luckily Switchbrake was one of them, and he quickly took up arms with other fellow Autobots to halt back the Decepticon incursions all across Cybertron. He and his squadmates fought around Iacon's outskirts, holding back Seekers from reinforcing Decepticon positions for as long as they could.
Switchbrake's vehicle form is a Cybertronian Hover Rig, which happened to be a common vehicle for delivering Energon. It has proved to be effective in combat due to its heavy armor, however at the cost of speed.
His weapons consist of dual-wield carbines, capable of dishing out many shots before overheating.
Motto: ''I once had a Decepticon friend. Had.''
I plan on doing a Decepticon OC using the same tools as Switchbrake above. We'll see.