Jackie O'Callahan

Jackie O'Callahan is encountered in Generally Hospital zone only when you have the quest The Pack.

Background
Jackie O'Callahan, previously Father O'Callahan, was not one of Dr. Ned's test subjects. He was hired by Jakobs to help fight the evil. He apparently was 'nicked in the neck' when he fought Hank Reiss. He is black in color.

Involvement

 * Leave It To The Professionals
 * The Pack

Strategy
He has the usual boss attacks, slam, knockback, melee. He has a fair amount of health. He has the special ability to completely regenerate all health in a matter of seconds. His weakness is his open mouth when he roars.