You can't do it with Mario and Luigi, but you can with Bowser. (You have to unlock it though) You press Y and then Y again when you're in the air. If you breathing fire, you need to press R. Then it should work. Hope I helped! :)
There are only 2 files in Mario and Luigi Bowser's Inside Story.
Yes he is.
SHE has 1610.
An alternate ending
use the hammer
You can get Beans, and an SP: Magic Window.
You can only do it with Mario and Luigi. For Mario, press A. For Luigi, press B.
no
not really
noone
You have to complete the pumpworks level
There are only 2 files in Mario and Luigi Bowser's Inside Story.
you have to hit the shell block.
on the map
By defeating him in battle.
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by eating lots of shrooms