He's Mr. Meeseeks! Look at him! This helpful fellow from the Rick and Morty animated series is a helpful guy that just wants to make sure whatever you want, you get, and then he'll disappear. Once the item has been activated, Mr. Meeseeks appears and can open a door, fight an enemy, make deals with the devil, and more. Then it's time to poof out of painful, brief existence.
Credits: Jean-Alphonse
https://steamcommunity.com/id/entibo/myworkshopfiles/?appid=250900