In order to get to his hidden location, you are going to need to have the sandblaster buddy power, which is with Toolshed. Sandblaster is the only thing that will let you solve the puzzle that you will encounter. 

Once you have sandblaster, you can make your way to the community center. In the community center, head to the women’s restroom, which is in the upper left corner. In the restroom, you need to find and move the trashcan next to the sink so that you can punch the wall behind it. After you punch the wall, you will be able to scan and interact with the pipe behind the wall.

Now you will need to select and use the sandblaster ability. This will unclog the nearby toilet when you increase your fart strength to the proper amount. You’ll know the proper amount because poop will leak out of the stall and shoot out. This means you have found Mr. Hankey. 

Open the stall and Mr. Hankey will want to take a selfie with you. He also will follow you on Coonstagram, which will increase your follower account and help you earn the Master of Social Media achievement. 

This guide is guaranteed to help you find the iconic South Park character. Let us know in the comments who your favorite cameo was.