Sean Michael Waltman (born July 13, 1972) is an American retired professional wrestler, better known by his ring name X-Pac. He wrestled for the World Wrestling Federation (WWF, now WWE) under the ring names 1–2–3 Kid and X-Pac intermittently between 1993 and 2002, World Championship Wrestling (WCW) as Syxx, and Total Nonstop Action Wrestling (TNA) as Syxx-Pac and Sean Waltman.