Answer
Hulk Hogan was not part of the main event at the first WrestleMania alongside Paul Orndorff. The main event featured Hulk Hogan and Mr. T teaming up against "Rowdy" Roddy Piper and Paul Orndorff. Hogan was the WWF World Heavyweight Champion at the time, and the match was billed as a "dream match" between two of the biggest stars in the wrestling industry.