Bowser
Theme: Bowser's castle (From Super Mario Kart)
I feel this is the best Bowser music ever... & had anyone ever noticed how this is similar to the final boss battle music on Super Mario World?
speaking of which....
Giga Bowser's theme: SMW Final battle
I think this music will match the dread that players will have when Bowser transforms into the horrid Giga Bowser... Yep, any charater that has a tranformation Final Smash will have a different theme that plays for the duration of the transformation.
Fighting style:
Bowser has always been all about raw power. the changes I'll make will try to take this further. also, Bowser is the heaviest, meaning he'll be the hardest to KO. Giga Bowser will be slightly more mobile than before, & stronger than he was in Brawl.
Changes in moves:
Koopa Breath (the M&L: Bowser inside story version, B)
Bowser's flamethrowing move now have a VERY wide range, like on the said game, & has a little more power, but it wears out quicker...
Whirling Fortress (Up + B)
Bowser now does this move with all his might, so much of his might that he always lifts off the ground, & this move is like a bumper item at low damage, & the might that Bower pitchs with this move make it go as far as the orignal version of this move. but only the 1st spin is an attack, & a excellent one for recovery & getting away from enemies.
New moves:
Dash Punch (from M&L: Bowser's inside story, foward + B)
Like the title says, Bowser will do a mighty lunging punch. this is excellent for charging the opponent, & if used right, to plow though multiple foes.
Handicapped abilities
Bowser's Koopa breath will last as long as it used to, & Whirling Fortress will have more oomph, & when Bowser does his Heavy Bomb move (Down + B), it'll create a small shockwave that'll make this move even better at clearing room, & Dash Punch will have a longer range.
Notes:
Bowser is stronger & harder to KO than before, but is the slowest charater. Like Wario, you should only over worry when he is in the hands of a Bowser expert, or/& has the Smash Ball.