First off, never ever ever use the word ret*rd for any one in any circumstance. That's just shitty.
ACHILLO is a rookie rapper fromStarship Entertainment that recently debuted in a youth hip-hop trio named OGZ.
He's the one with the glasses:
Even though they only recently debuted, he's caught in a scandal because of a past Facebook post. He criticizes Dynamic Duo Gaeko's collaboration with RM saying~ "The Rap God has met with the Rap Retard... How will it be lol I'm only going to listen to Gaeko's verse."
Instead of apologizing, he harrassed the person who posted the screenshot on Facebook messenger (this is a translation of his messages)