Leech

Leech is a mutant with the ability to neutralize any other mutant power. He joined the Morlocks because of his altered appearance. He speaks in broken English and refers to himself in the third person. He used his powers to stop Cyclops' eye beams so others could see his real eyes. He was captured by Lady Deathstrike and the Reavers while they went after the alien ship. His life force was stopped by the prisoner inside, but the X-Men saved him. On Christmas Eve he got sick and the other Morlocks went out to find help. Storm, Jubilee, and Wolverine used a transfusion to use Logan's healing factor to help him.