Osteokinesis

Perrin Crocker (Heroes)
Perrin Crocker is able to protrude bone spikes from his body.

Travis Crocker (Heroes)
Travis has the ability to emit bone spikes and shields from his body. He demonstrated this in chapter 4 of Slow Burn by blocking a fire ball from Gail Bowman with a bone shield, and then forming a large bat with the bones in his arm and swinging it at Gail.