Not sure quests is the right forum for this, but it seemed suitable since this is a quest for adding a new concept.
Since butt jiggle has its own concept, so should butt attacks. Here are the most famous butt attackers:
First, by far the most famous one:
Princess Peach (Smash Bros.)
Then, lots of others:
Rainbow Mika (Street Fighter Alpha 3)
Cassandra Alexandra (Soulcalibur)
Sophitia Alexandra (Soulcalibur)
Aska (Turtles: Tournament Fighters)
Mai Shiranui (King of Fighters 2000 and onwards)
Candy (Fighting Vipers)
And there are lots more than these. How do you create a new concept? Pledge to mods?