Powers: Creation of a reaction that solidifies moisture into a hardened shell; shoots spray of barnacle-like crust.
Bio: Barnacle is one of the newer Acolytes that debuted during the Magneto War. He later might have died during the Sentinel attack on Genosha, as that was where he was last seen. Though this is unclear at the moment, so Barnacle might reappear in the future.
Notes: His real name is revealed in a Marvel Official Handbook and finally confirmed in X-Force #21.