11 WWE Stars Who Made Appearances For Other Promotions

Not even The Undertaker can claim to have wrestled exclusively for WWE since debuting with the company. In fairness, that debut did arrive all the way back in 1990, some 27 years ago, so it’s somewhat understandable we’re covering him on this list.

On top of that appearance alongside Kane at the WXW Yokozuna Tribute show, The Undertaker has also turned out for IWA Puerto Rico. Specifically, he was in action at a pair of house shows in January 1999 that WWE helped co-promote—this time facing Kane rather than teaming with him—as well as a Christmas special in December of the same year which, again, was in collaboration with WWE.

And remember the SWS promotion from Japan that we mentioned earlier? ‘Taker also appeared on two of their shows in March ’92, first facing Takashi Ishakawa and then King Haku, before returning to the country in October 1997 for the Michinoku Pro 4th Anniversary show.

There, he was flanked by Bruce Prichard, in something of a throwback to the 'Deadman's 1990 Survivor Series debut.