Luke Stewart is one of five humans discovered in suspended animation aboard a malfunctioning starship that crash-landed on Electronic Planet B-1 in 406AE. Thrust into this new world, he emerges from stasis alongside the other humans and is drawn into the conflict between the Algo Republic's Machine Robo forces and the antagonistic Gurendos mechanoid gang. Luke pilots the specialized combat vehicle, the Battle Riser, during engagements against the Gurendos. The humans collectively align with the Battle Hackers, an unconventional and often rebellious Machine Robo unit within the Algo Republic Army. His role centers on operating the Battle Riser within this alliance, contributing to efforts to repel the Gurendos threat while the human group seeks a means to return to Earth. Information detailing his specific actions, personal background, individual character development, or appearances beyond the original 1987 television series is unavailable.