Cartmic has been a Pokemon ROM hacker since 2002, he mainly hacks red.
His favourite hacks are those with don't deviate too much from the official game styles. He particualy likes new takes on Kanto. The group name he used to release under was MA Translations, the translations is a hang over from the early days of Pokemon Hacking, these days he uses MC Hacks, the M standing for Mateo and the C for Cartmic.
He is most known for his Red hack Pokemon Violet.