The episode "How's Bayou" has two different versions. The original version aired on September 16, 1989 and never again. It had a lot of unfinished/raw animation, different music/dialogue/scenes/etc., and a lot of other little differences. The "finished" version aired all subsequent times. Strangely, the Shout Factory DVD includes the rare, first version, and not the later better-known version.
The working title of the show was "Captain Nintendo - The Game Master", and the working title for the pilot episode was "Kevin in Nintendoland." This had to be changed, as the network didn't want the word Nintendo in the title - they felt that would be blatant advertising.
In a strange twist of fate, Ian James Corlett, who voiced Dr. Wily on this show, would voice his nemesis Mega Man in the Mega Man animated series (1994).
Alessandro Juliani was the youngest member of the primary voice cast. He was only 11 years old when he provided the voice of Kid Icarus.
Northridge, the California town that Kevin comes from, actually exists. However, the school he supposedly attends, Northridge High School, does not.