Professor Horatio Hart (played by Indianapolis native Julian Combs) is the mentor and serves a Zordon-like role. He was a computerized being who would provide and construct the necessary arsenal and equipment that the Troopers would use throughout the series. Hart was once a flesh and blood human who worked with Tyler Steele on the VR Trooper project. But one day, he was mortally injured by Grimlord; to keep Hart alive, Tyler virtualized his brain. In his most notable role in the episode "Good Trooper, Bad Trooper", he gave Ryan his own Virtualizer to allow Ryan to battle his evil clone after the clone stole the real Ryan's Virtualizer and took control of the Skybase. In early pilot footage for the show (as seen in a VR Troopers promo featured on the Power Rangers Official Fan Club video), Hart was originally portrayed by a Caucasian male slightly resembling Albert Einstein.