So Petey Piranha is in Sticker Stars. As is Bowser Jr.
Shut up and take my money, Nintendo.
Oh, and by the way, my favorite Mario characters in order
1. Petey Piranha
4. Bowser Jr.
I don't really know why Petey and Bowser Jr. are on there, they just are. Whatever. In Petey's case it's largely I just like how he looks.