Not really made any contributions to the thread, but had some ideas I thought were cool when checking with the thread...
Having Santa be based around stage control would be really apt... Maybe he can throw a present which functions as a barrier or like a crate in smash, and it forces people to think around that... Having moves that capitalize on the forced reactions could allow for something really unique... I'd assume the sleigh would be up b, being controlled like Steve's up b, although a lot longer lasting and having a constant hitbox... This could be guidable, which could be one of the ways to capitalize on someone jumping over a mountain of presents... Say down b summons an elf which act not only as a meatshield but can remove the presents one by one if they're near it every 20 frames or so... Leaves side b which could probably be some kind of snowman summon... This could also function as a meat shield, but maybe if side b is pressed near it, he'll punt it forward like a bowling ball, acting as a pretty slow moving hitbox for even more stage control.. To clear up my ramblings:
Neutral B: Present Toss
Tosses a randomly colored gift in an arc forwards, has a pretty underwhelming collision hitbox, but stays in place if it lands on the ground as a Steve like block that can take up to 20% let's say... Can have up to 6 out at a time, after which the current ones must either be destroyed or disappear after about 15-20 seconds...
Side B: Snow Summon
Sets up a snowman in front of him, can be used as a meat shield, halting the momentum of anyone launched into it before breaking. They have 7HP normally, but if Side B is pressed near it, he'll pat it on the back and it'll go careening forward as a pretty slow moving projectile that falls off of ledges and is pretty strong...
Up B: Sleighbells?
Sleigh suddenly appears under him from weird dust, and can be guided like Steve's, although more generously guidable since it wouldn't be as fast... Pretty good damage, can use neutral b whilst using, and can cancel with jump...
Down B: Little Helper?
Summons an elf from same dust, destroys any presents in vicinity after 20 frames, and can take up to 30% damage before disappearing... Can have 3 out at a time...
Dracula is one I'd rather do a more generalized approach on, considering the way they're portrayed is way more subjective... He'd probably be a token hit and run, relying on passive damage to actually get the foe to KO percent instead of putting himself at risk for too long...
Neutral B:
Holds palm out, all in a manner that looks like Sephiroth's grab animation... If anyone caught in the pretty small range, they are stuck as Dracula turns into a bat, flies around them, and bites their neck or equivalent part... This then causes the opponent to start walking away from Dracula until they mash out as they would a usual grab... If they pass a certain percentage threshold however, Dracula has free rein of their movements... He can't attack, only movement, as pressing any attack button would end the state as all the shadow that once manifested the opponent now turns into a dark copy of their figure in front of them... This is a shadow clone, only one can be out at a time and they have 35 stamina... They are CPU controlled, and aren't that smart, able to run off ledges and such... Disappear automatically after 8 seconds. Pressing B whilst one is out would have Dracula teleport to exactly where his clone currently was, bursting out of it's body in shadow, destroying it. Full invulnerability allows for safe repositioning.
Side B:
Brief startup period as he manifests into form of wolf, before he then enters a charging phase, which, after releasing, he then pounces to a max of 75% of FD. Inflicts a pretty measly poison effect, doing 2% every second for 5 seconds if it connects, with high knockback growth. Gains power as charged too.
Up B:
Would transform into a bat before charging into any upward cardinal direction, pretty strong, but easy to see coming. Maybe lower fall speed when in this form, and if aerials use bat form, maybe he could have less start up on aerials, but unable to access specials until he hits the ground.
Down B:
Enters a stance that I envision looking like his idle pose as a boss in Smash, with this being a counter. He phases through the opponent and their attack straight forward as he turns to smoke, re-appearing behind them. Allows for free follow-ups which makes it more than just a literal smash counter, and it inflicts a poison effect for 2% every second for 4 seconds. Poison effects don't stack, but can reset if using the same poison move as the what the opponent is currently afflicted with...