As part of a range released in 2001 by Tiger Electronics and Hasbro Dr. Inferno Jr . was 1 of 8 robots in the RC Custom Series. Like other robots in the series, Dr Inferno Jr. contained the same chassis as the other toys and built in impact sensors allowed "vitual damage" to be shown on the robot, as a result of ramming. Having the same chassis meant his lower body was out of proportion with the rest of him. Flashing LEDs on top of each toy displayed exactly how much damage it had taken, and the robot would cease to function once its light was no longer illuminated. This toy had a prototype version based on its Season 2.0 guise that was never released and a "Tournament Edition" that was released and based on the tournament winning Season 3.0 version, hence the name. The toy was fairly accurate but lacked any effective way to get underneath the other toys, was much taller than the real robot due to the chassis design and came with additional attachments that the real robot never used.
Dr. Inferno Jr. was the only Lightweight to be released as an R/C toy.