Dark Beast is an alternate reality version of the founding X-Men member and Avenger; Beast (Hank McCoy). Dark Beast's home reality was Earth-295, or the Age of Apocalypse: a timeline skewed when Professor X died before ever forming the X-Men, and the Mutant tyrant Apocalypse conquered North America, threatening both humanity and much of mutant kind. Without the guidance of Charles Xavier, Hank McCoy's intelligence and pension for experimental science were allowed to flourish unhindered by the morals and compassion that are associated with his 616 counterpart. Acting as one of Apocalypse's chief scientists (and torturers), Beast's experimentation on humans and mutants alike were devious and highly unethical, earning him the name of "The Beast". He loved experimenting on anyone he could which included Scott and Jean of that reality.