No, they're not actually related. They formed a duo called the Brothers of Destruction, but this was purely for entertainment purposes. They are not half brothers, or anything but co-workers, for that matter.
brothers and enemies
In the wrestling world, Kane is Undertaker's half brother.
kane
kane enimies are his brother undertaker
his brother Kane and makind
Kane is the young borther of Undertaker. And that is true.
no.
kane
the undertaker
yes
Kane they grew up together. No, they didn't, and Kane is not his real brother.
I think Kane's brother is the Undertaker.
Yes, they are infact blood brother's.