He and the other insectoid Predacons crash on earth in their stasis pods millions of years ago. Landing in a swamp, the scanners in their stasis pods gave them new alternate modes based on local insects. Eventually their food-raiding activities attracted the attention of both the Maximals and Predacons, the latter approaching them with offers of alliance and shared purpose.
His robot form is a male humanoid robot that was around Tigertron's height and colored green, neon yellow, a dark translucent green and some white. He seemed a little thin compared to the others, but seemed able to take a beating. A piece of the spittlebug's armor plating acted as the robot's chestplate. The rest of the spittlebug's body was mounted on his back and shoulders; it was almost as if the whole beast form was made into a body shield. On the right side, two claws were there where the head was and on the right side, a single tail claw was presented. His feet were one big claw up front and one claw in the back of his heel. His head was something terrifying; it was white but a neon yellow faceplate was present, and on top of the head were two black horns. His eyes were black and yellow, but his mouth looked like a black respirator.
His beast form is a pill bug and later becomes a mechanical Transmetal pill bug.
His Vehicle mode slightly resembles a Tsmeu-6 personal wheel bike.