derogatory term for overweight neck beard male fans of the anime inspired video game series "Persona". The term comes from the name of the company that made the games called "Atlus" and the fact that many fans of the franchise are obese male weeaboos.
"I saw a fat guy at the local game store today browsing anime themed games"
"it was probably a fatlus"
"it was probably a fatlus"
by Madzaku January 13, 2009