Ok I beat the monster thing now I just need help beating princess shroob..

For the first and elder princess shroob I think you should use a lot of pocket chomps and copy flowers and don't forget the 1up mushrooms you will need them. And for elder princess shroob (transformed) use a lot of mix flowers because they target everything and if you have some pocket chomps and copy flowers left over use those and attack the crown untill it turns grey then attack her head. I think you should equip cure badge A for your strongest guy and drain badge A for your next strongest guy. Before you battle princess shroob go level up some more that will help too.

A good way to beat them easily is to first be at level 32 or so then you can go to fawfles badge and bean shop in the sewers and try to buy the ulti-free badge twice if you don't have that many beans go to thwamp volcanoand that one roullette kinda game thing then just keep getting the three stars and you can get a bunch of beans then go buy the beans they are good against both princess shroobs because if you have 1 of every item you can use them forever!!!and if this don't help srry cause I just made my blog lol!!!!!

If you want to get all the items that wcc1010 and wooty woot woot talked about, here's what to do. Stop before entering the prison room of Princess Peach. Go back, and one of the blue pipes should be an exit out of the castle. Enter it, and you'll be somewhere near the beginning of the whole castle. Before leaving the pipe after going through, hit the block and stairs will appear. This assures that you can come back this way without doing the whole level again. Then you just go right into the next room, then down, and into the time portal. You'll be back in the castle! You can prepare for the battle by going to past levels, or stocking up on healing and attack items.