No, it doesn't
Mario and Luigi goes to Bowser's Castle
wario then waluigi then luigi then Yoshi then Mario then bowser jr then bowser
Yes every DS game is compatible with the 3DS I believe.
Bowser can't jump.
in the flashing area
Yes, one: Mario and Luigi in Bowser's Inside Story.
bowser has 92%
You don't
after inhaling it as bowser, first you destroy the glasses (as Mario and luigi), then the legs.
If by that you mean confront Dark Bowser with Mario and Luigi, the answer is no. The developers made sure only Bowser could reach and confront Dark Bowser.
nerve clusterenergy hold
You go through the pipes in bowsers body