Bowser (SSBU)/Up special

Overview
Bowser’s up special is Whirling Fortress. He withdraws into his shell and spins around rapidly. It starts up on frame 6 and is capable of moving forward or backward while doing so, which makes it an extremely effective out of shield option, launching opponents vertically and easily putting them into a disadvantage. In the air, it propels Bowser diagonally upwards, travelling below average distance vertically above average distance horizontally. The move can cover a greater distance via button mashing near the end of the move.

Update History
   

Grounded

 * }

Aerial

 * }

Aerial
The move can grab ledges from both sides starting on frame 9.

Parameters
The move's vertical speed in the air can be altered by mashing the special move button during frames 1-49. This overrides its default vertical speed; as a result, simply mashing near the start of the move actually reduces its height, but mashing near the end keeps Bowser afloat for longer and allows him to travel farther.