It's kind of hard to say when you think about it. Generally speaking, the two guys most associated with Warrior are Hulk Hogan & Randy Savage. I know that fans would want someone that was really connected to Warrior to induct him and say all the glowingly nice compliments about him that one would expect as part of such a moment. The problem is that Warrior has spent most of the past 20 or so years effectively burying damn near everybody that he's ever worked with in wrestling, including Hogan & Savage. Savage is dead & gone and there's no telling if Hogan would be willing to let bygones be bygones to induct him.
Whilst Savage and Hogan are the biggest two, there are others you can associate with the Warrior. They could think outside the box and have Sting induct him. Within WWE, Rick Rude is no longer with us so that him out of the running. However there is still Undertaker, although with Paul Bearer likely to go in and because Undertaker is bound to have doubts about Warrior's attitude thats unlikely. Then there are the likes of Slaughter, although Slaughter is now always remembered as a face he seems the best bet within the the company.
However I highly doubt it will be Hogan, just the presence of the man and the crowd reaction could easily get Warrior ****ed off. I think they will pay safe or go for Sting.