Predacon is a Decepticon from the Unicron Trilogy series.
Predacon is a fantic who experiments in the combination of organic tissue and standard Cybertronian robotics. He believes that through this process, Transformers can become far more powerful... and Predacon certainly packs a lethal punch. Though most Cybertronians find this idea repugnant, he was able to amass a cadre of followers. This group became big enough to be worrying to the Autobots, who even sent an agent deep undercover to keep an optic on them and hopefully even discover just where this biomechanical technology came from, which is one thing the boisterous Predacon is remarkably silent about.
Fiction
Dreamwave Armada/Energon Comics
Centuries before the Transformers came to Earth, Predacon was a member of Scorponok's platoon, and accompanied him on several missions.
Toys
Armada
Predacon is a retool of the Transmetal Megatron mold, transforming into a metallic t-rex to a robot mode with organic-looking parts, plus his t-rex mode has a third "flight" configuration. Two Mini-Con Powerlinx plugs were also added. He only one of two Armada toys to have two Mini-Con partners; he came with Side Burn and Skid-Z.