The Undertaker's mother had an affair with Bearer and as a result, gave birth to a younger half-brother of The Undertaker, named Kane. (It's important to note that while growing up, Undertaker {and presumably his deceased father} lived the vast majority of his life {entirety of the father's life} under the belief that Kane was fully related to him and his family; that is, until Bearer unintentionally revealed to a Raw audience that he was actually Kane's father, this as a result of an affair Bearer had with their mother and thus making Kane and Undertaker half brother. This came to light when Bearer informed Jerry Lawleron Monday Night Raw, at a point in which he thought cameras had stopped rolling for a commercial but were still on. Growing up, Undertaker lived in a funeral homewith his family. According to the secret, The Undertaker committed arson/murder, burning down the family funeral home, in the process, killing his parents and scarring his half-brother's face. Bearer, who survived the fire, hid Kane in a mental asylum during the rest of Kane's youth into adulthood. In the meantime, Bearer went on to form an alliance with The Undertaker while in the World Wrestling Federation, standing by his side for six years before eventually betraying him at SummerSlam 96.
After suffering mistreatment at the hands of Undertaker, who had long been vindictive and embittered over the SummerSlam 96' betrayal, Bearer opted to exact his own vengeance upon the Undertaker with the ultimatum of revealing his biggest secret. Feeling he had no choice, The Undertaker eventually obliged Bearer. While "managing" Undertaker this time around, Bearer became a tyrant, harassing and nagging at Undertaker constantly. At numerous points in which Undertaker attempted to take attitude, disobey, or even defend himself, Bearer would subjugate him by threatening exposure of the secret.
