User blog comment:Cattlepult/i'm (hardly) working on a piece of.. uh.. "art"/@comment-31322722-20170219011234/@comment-28348278-20170221045801

OC stands for "original character." it's one of those terms that have different definitions, but the one i'm using is:

''"An original character is a character created that does not come from an existing copyright. In other words, it is a new fictional character." ''(thanks flipnote wiki!)

i guess they are related to rps, since you could roleplay as them.