Sean Waltman, better known as X-Pac is a former American professional wrestler.

Waltman is known for his past in the World Wrestling Federation / Entertainment, from 1993 to 1996 called himself The 1-2-3 Kid), where along with Scott Hall, Shawn Michaels, Triple H and Kevin Nash was a member of the Kliq, in World Championship Wrestling under the Syxx name, in Total Nonstop Action Wrestling under the Syxx-Pac name, and in Asistencia Asesoría y Administración, where he wrestled both as X-Pac and under his real name. Until July 2019, he wrestled on the independent circuit.

Waltman was married to a woman named Terry. Together they have two children: a son named Jesse (born in 1992) and a daughter named Kaitlyn (born January 25, 1995) the two divorced in 2002. In 2003 Waltman was engaged to Joanie Laurer former wrestler best known by the ring name Chyna, the two broke up in 2004. In the same year, the two filmed a se*tape later released under the title 1 Night in China.