Grand Dad began as a glitchy sprite in the bootleg Famicom multicart Mario 7 in 1, where the playable Mario is visibly Fred Flintstone with mismatched colors. Streamer Vinny of Vinesauce spotlighted the bootleg during a corrupt-games broadcast, and his booming delivery of the name stuck as an in-joke. Clips spread through highlight compilations and later through SiIvaGunner-style mashups that treat Grand Dad as a folk hero of bootleg culture. It endures because it instantly flags anything counterfeit, cursed or lovingly broken in gaming videos.