
Duff McWhalen is one of the eight Maverick bosses that appears in Megaman X5.
Duff McWhalen was head of an oceanographic museum and captain of marine security, guarding the northern Atlantic ocean. When Earth Crises started, and the Maverick Hunters seek out Duff McWhalen because they need to protect themselves to produce hydrogen to power the Enigma cannon. After being infected by the Sigma virus, he ends up fighting the Maverick Hunters, who in the end he ends up being defeated by them. Duff McWhalen has started fighting in one on a piece of the screen full of thorn he will fire ice blocks, he wrath tries to tie the player up to the wall thorns and kills him, when he is with little life he will dice to the side of the arena and shoot fast to push the player up to the thorn wall. His weakness is the C-Shot with X and C-Sword with the Zero.