Beast

Background

 * High learning done at Xavier's School. Has a doctrine in Bio-Chemistry.
 * Trained with the X-Men and performed a few missions before leaving at the age of 20.
 * Employed at Brand Corporation, a genetics research facility.
 * Hank isolates a "hormonal extract" allowing anyone to become a mutant for a short period of time, and uses the mutagenic serum on himself to disguise his appearance while foiling an attempt to steal his research. Waiting too long to return to normal, the process becomes irreversible.
 * He rejoins Xavier's School when Xavier approaches him with a teaching position.
 * At first, he wasn't going to rejoin the X-Men, but when they specially needed him during a mission he ended up assisting them and got stuck back on the roster.