8923 Hydraxon is a BIONICLE set released in 2007. He has claws and a Cordak Blaster. The same helmet that Hydraxon wears also appeared in black in 7145 Von Nebula, being one of the only two reused BIONICLE masks/helmets since the theme ended.
Hydraxon was a member of the Order of Mata Nui and jailer of the Pit. The current Hydraxon is actually a "clone" created by the Mask of Life, the original having perished in the Great Cataclysm.
Hydraxon is the powerful armored figure assigned to guard the Pit and now he's after the Barraki! A master of every known weapon, he's armed with boomerangs, wrist knives and a Cordak blaster. Runners don't have a chance when Hydraxon's on their trail!