A key part of this backstory is the character's half-brother, Kane, who was introduced in 1997 and has both feuded and allied (as a tag team called the Brothers of Destruction) with Undertaker.
A key part of this backstory is the character's half-brother (as a tag team called the Brothers of Destruction) with Undertaker. Kane is brother. Kane was introduced in 1997. This was brother. Kane has both feuded. This was brother. Kane allied. This was brother.