Koolboyman is the developer of three well known hacks.
- Pokémon Brown
- Pokémon Prism
- Rijon Adventures (remake of Brown)
Koolboyman doesn't have a website anymore since it's been defunct, although if you search him online you can find him on Twitter.
Going to the Rijion website will only say "Thank you all for your support throughout the years. More information forthcoming." with a Legal notice from Nintendo regarding Pokémon Prism.