Bowser's grounded down b- not useless. Use as a dash counter or smash counter. Must read opponent well.
Can also edgehog/gaurd.
Up b out of sheild- if you have tap up to jump off, just slide over y to b while holding up.
Flamegaurd- shorthop, if they DI down, blast fire up then rake them down, and if they waste all their jumps then up b let go. Works on MK and Jiggs on rare occasions.
Claw return- koopa slam someone trying to gimp you. You'll either take the stock or both of you will DI towards the stage so hard you will recover.
Dtilt spacing- back up while crawling if they smash then crawl in and dtilt. Dangerous, but works.
Crouch spacing- on BF Bowser is so big he can be hit from above through platforms. Crouch to cancle this. from here you can
Grounded down b to double hit them.
Switch to utilt or uair or usmash as they miss. Even fsmash works! They have to be in front.
Dsmash hogging- on the tiny BF platforms, or on Luigi's mansion, if they jump on the platforms and you dsmash they have nowhere to go, and no matter how long their roll or spotdodge is, they get caught.
Firebaiting- People love to attack through the BF platforms. If they run to get under you, just shoot fire straight down, then follow their DI.
Bair wop- Whom needs Jigglypuff's wop when you can bair them ONCE offstage and return.
Fortress hog- facing away from the stage, up b to the edge and catch it.
Projectile cancel- dtilt, jab, ftilt, and fortess cancel projectiles well.
Roll punish with ftilt in the opposite direction, or a turnaround flame.
That is everything I can think of......
