Born Mark William Calaway on March 24, 1965 in Houston, Texas, The Undertaker is an American professional wrestler. He is currently signed to WWE, where he has worked since 1990, making him the company's longest-tenured in-ring performer. Calaway began his wrestling career with World Class Championship Wrestling (WCCW) in 1984. After wrestling for World Championship Wrestling (WCW) as "Mean" Mark Callous from 1989 to 1990, he signed with the World Wrestling Federation (WWF, later WWE) in 1990. In WWE, The Undertaker is a seven-time world champion, having won the WWF/E Championship four times and the World Heavyweight Championship three times, as well as the winner of the 2007 Royal Rumble. He is recognized as the fourth youngest WWF/E Champion in history, having won the title aged 26 years, 8 months, and 3 days.