The 54-year-old WWE star - real name Terry Bollea - separated from Linda Bollea last November after 23 years of marriage and admits their bitter war of words has taken its toll on him.
Hulk - who in his career faced a host of fearsome opponents, including Andre the Giant, Earthquake and The Rock - told Us Weekly magazine: "Without a doubt, this is the most formidable opponent I've ever run into."
"You talk about dirty tricks. Brass knuckles, steel chairs, cheap shots, tripping people up. I've never seen anybody in the wrestling business that has more dirty tricks than she does."
"I guess I taught her well."
Linda, filed divorce papers claiming he "relentlessly and methodically" stalks her, "causing her anxiety and fear for her safety at all times."