The Ex-Mutants Must Die - Written by Tom Mason, Chris Ulm & Dave Olbrich. Art and Cover by Paul Pelletier & Ken Branch. The Ex-Mutants set off to find a power source which will save Dr. Kildare, but danger awaits them as they must travel into the heart of Sluggo's domain to steal his power cell! As if that mission wasn't dangerous enough, our heroes must battle the most dreaded group of bounty hunters the region has ever seen!