Weavel is a former Space Pirate commander who was severely wounded by Samus Aran on Brinstar (according to the official Hunters strategy guide), leaving only his brain and central nervous system intact. Afterwards, he was fitted with a new robotic body, allowing him to separate his torso from his legs, which then become a stationary turret. It is unknown if he seeks the treasure of the Alimbic Cluster for the Space Pirates, or for himself, but he will remain with the Space Pirates as long as it's convenient. He enjoys missions that no other Space Pirate could accomplish because of his robotic physique. It should be noted that Weavel must have had some special value for the Space Pirates as he was saved and given a new body, when usually Space Pirates have little regard for the safety and/or death of their own kind (or any other beings for that matter).
Weapon of choice: Battlehammer - A powerful mortar beam that fires explosive shots rapidly in an arc with a very small splash radius. When Weavel wields it, it does more damage and has a far greater splash radius. According to the Nintendo Power guide, it has crude mechanics but is effective when properly used.
Altform: Halfturret - Weavel's body is split into two separate parts, dividing his health in half and making his lower body become an autonomus, stationary turret that shoots non affinity powered battlehammer shots. His upper body continues to move about freely (controlled by the player) wielding an energy sword. Damage taken by the upper half will not do any harm to the turret, but if the turret is attacked, it damages Weavel as a whole. If the turret is destroyed, Weavel will be left with only one health point.