Anything. You can attempt the Pit of !00 trials, solve trouble's at the trouble, make a comeback at the Glitz Pit(Not much different from the first time and not as fun. But that's just my opinion), etc. You can also see If you can find some of the old partners from the old paper Mario game, unfortunately there just for display and talk, they cant join your party :(
Who is the "Boss"? There are alot of "bosses" in Super Paper Mario
Acutally, it depends which one. Paper Mario: No, thousand year door:yes, new paper Mario:yes
By getting dottie
you shoot Mario at the moon.
By getting dottie
it is in flopside after you beat world 7
Poosh the "x" buttn
None, none at all.
Keep Trying your hardest and eventually you will beat it.
beat the last boss i recomend vivian or bobbery
beat flipside's pit of 100 trials beat the boss, and ull get dashell
no. you get it when you beat the dark heroes at the end of the flopside pit of 100 trials.