The men who play wrestlers Kane and the Undertaker are not really brothers, although the fictional versions of their characters are said to be half-brothers. The Undertaker's real name is Mark William Calaway, while Kane's real name is Glenn Thomas Jacobs.
The Undertaker's real parents are Frank Compton Calaway and Betty Catherine Truby, and his real brothers are named David, Michael, Paul and Timothy. However, according to the pro wrestling fictional story, Kane's parents are a man named Paul Bearer and the Undertaker's mother, making them half-siblings. Supposedly, the Undertaker killed his parents and scarred his half-brother in a fire. The identity of his half-brother as Kane was revealed on an episode of Monday Night Raw in April 1998.