Sean's Replacement is a character who appears in Nigahiga videos.
Sean's Replacement is a white male (one of the few white people to appear in Nigahiga videos) who supposedly replaced Sean, but it was just a joke to trick fans. He can't talk properly and speaks gibberish that is merely words that are meant to poke fun at Asians like "ching chong". According to Ryan, he is an U.G.L.Y. D.U.M.B.A.S.S. which is why he can't speak properly. He appears in Ryan and Sean's NSEA Trailer and briefly in Sean Returns!.