You mean aside from working with the Shadow Queen (the one who plunged almost all of Mushroom Planet into darkness) while they were still alive as a Hellvalley Skytree about 100 or 1000 years ago? Oh, just blew up a few major cities (with everyone still in them) with Bonetail, stole a bunch of star power for the Queen to use as well as being a source of anti-star power....that ended up attracting the other Hellvalley Skytrees to Mushroom Planet. That's about it for now. I might add some more things later.