In 1991, He went to the WWF as The Viking. He soon changed his name to
The Berzerker and was managed by Mr. Fuji and he feuded with Davey Boy
Smith and Jimmy Snuka. He then feuded with The Undertaker, at one point
attempting to stab him with his sword, until he left in 1993. His most
often method of winning matches was by throwing his opponents out of
the ring and getting a "count out" victory, all the while holding his
wrist and shouting "Hus Hus".