The Undertaker was backstage at this week's episode of WWE Raw, reports PWInsider's Mike Johnson.
This corroborates an earlier report from WrestlingNews.co, who had already reposted a clip of 'Taker's wife, Michelle McCool, walking through part of the arena:-
There's currently no word on what McCool and Undertaker were doing at the Raw tapings, though neither appeared on camera.
Given that the couple live in Texas and this week's Raw was held in Dallas, it's likely that they were just visiting friends while the promotion was in their neck of the woods. This was WWE's first Raw on the road since the COVID-19 pandemic took hold in March 2020.
Undertaker formally retired from professional wrestling at Survivor Series 2020, where he was given a full-on retirement ceremony. He hasn't appeared on company television since then. McCool, meanwhile, made a couple of in-ring comebacks in 2018, wrestling in that year's women's Royal Rumble and again at Evolution in November.
Recent weeks have seen the likes of the soon-to-return Becky Lynch and countless NXT names backstage at various WWE shows. It's currently comeback season in WWE, with John Cena and Goldberg already returning to programming - and more seemingly on the way.