Acid Here Waiting For You

 is a limited-time premium side questline that was released on July 20, 2016, during the Superheroes 2016 Event. It requires the Radioactive Man Movie Scene, which offered as a Gil Deal. If the player hasn't unlocked Sidekick Milhouse, then he will be unlocked progressing with the quest.

Quests
*Once the starting dialogue ends, if the player hasn't unlocked Sidekick Milhouse, then he is unlocked.

End
"Need a better place for Milhouse to sulk? Get his trailer in the store now!"

- System Message.