The Cattepigard resembles a train more than anything else. It's a slow-moving segmented Bydo comprised mostly of metal, and it becomes stuck should it impact a wall. Each segment can take a lot of abuse, and pilots would be lucky to destroy even one segment. Each segment can fire a stream of energy bullets upward, and the head's weak point, an easily identifiable glowing yellow point, fires streams at different angles. Destroying the head kills the entire creature.
A Bydo lab experiment gone horribly wrong. It is made of metal scraps or wreckage from its surroundings. After destroying something, it gathers the scraps and grows even bigger.