That Maybel, she’s one fiery grandma! You really can’t underestimate an old lady with a lot of minions, can you.

It seems that you shouldn’t be underestimating one-armed Unliving shopkeepers, either. Something has been troubling Bubbles of late, and he’s not quite sure why, but it makes him ridiculously angry and you’d do best to stay out of his way!

Bubbles is available now as a challenger if you can figure out what triggers his rage and unlocks him!

Once you unlock Bubbles, he will appear in the Secret Tab. Unlike our Throwback Challengers, unlocking Bubbles is not limited to just this month. While we'll continue releasing a challenger on the second Thursday, you'll have plenty of time to unlock them.