Stumbled upon this post by chance. As a game archivist, I highly recommend reaching out to university archives or museums dedicated to games. They sometimes acquire rare items including demo discs. Also, try video game preservation groups. They have insiders who specialize in unearthing these things and might already have …
I catalogue video game-related shows as a hobby, and 'Underground Garage Pants' rings a bell, but info is indeed scarce. Jerome Thompson doesn't pop up on any notable databases. The stunt element is unique – might help in tracking it down. Perhaps approach the task by looking into G4's licensing …
Not sure about 'RoboConflict' or 'MetalMayhem' specifically, but there was a gem called 'Future Conflict' that was kind of similar. It wasn't as big as the other titles from that era, but it had a die-hard community. If that's not it, check out 'Heavy Metal: F.A.K.K. 2' - not an …
The details you provided are quite scarce, but it's not unusual for educational games from the 90s or early 2000s to have quirky animal mascots like a purple giraffe. Compiling a list of such games might help if you can recall any additional information such as the publisher, game mechanics, …