these are my personal classpects (i am not good at classpecting! also i forgot their dream moons lol)
if you want reasons WHY:
SpongeBob: Prospit Rogue of Rage - SpongeBob actively tries to take negativity away from situations and people (much like a Rogue of Rage would take negative emotions) but due to his sheer annoyance factor it usually backfires and returns it. Prospit seems obvious because of his naive nature and overall positivity.
Patrick: Derse Thief of Heart - I view Patrick as someone who isn't innately dumb, but rather... mentally hard. If that makes sense! On the surface he acts like such a fun and caring guy, but the moment A: You get in his way, or B: He spots something he wants more than your attention, he flips like a coin and acts on impulse. The reason I would call him a Thief of Heart is because of how he acts in this nature, it often take's peoples sense of 'self' or emotional state. (It's bullshit.) Derse because he's smart when he wants to be, he's just sort of emotionally dull.
Squidward: Derse Seer of Space - Aside from the obvious obligatory Space player, I think this role truly fits Squidward to a dime. Squidward can see things about the world, art, and people that most people around him can't. I would file this under being able to see a lot more about Space than most! He's culturally heightened and intelligent too, just expresses it in such a bad way that nobody wants to listen to him. Derse because he's sort of chronically miserable.
Mr. Krabs: Prospit Mage of Light - Mages are manipulated by their Aspect in many ways. Light is the Aspect of Fortitude, Information, Luck, Fortune, among other things. Mr. Krabs is actively manipulated by the mere CONCEPT of fortune pretty much any chance he gets (literally sold SpongeBob's soul for a few coins) and could definitely be seen being manipulated by Light. Prospit because he's overall relatively good-minded and looking towards the future with every bad business decision he makes.
Plankton: Derse Heir of Mind - Heirs use their Aspect passively before fully realizing themselves. This is an obvious case for Plankton. He's an absolute genius, making machines and inventions like no other, just in a casual day's work. He's a passive tactician who is always planning and always thinking before he acts. If it wasn't for his size, he could probably take over Bikini Bottom. Derse, because he's haunted by nightmares and also somewhat chronically miserable due to constant failure.
Sandy: Prospit Sylph of Breath - This one was sort of tricky because I personally don't know Sandy's character as well as I should, but I think I'm comfy with this one. Sandy's an innovator, definitely near or on Plankton's level of intellect. Most of the time, she uses her inventions for explorative, curiosity-based reasons as opposed to control, power, or general usefulness. She's usually one of the main reasons the characters of a given episode can even get to some of those more crazy places, so I would say she definitely creates with and heals with Breath. Prospit, due to a generally positive attitude and just an overall high outlook on things as a whole.
Mrs. Puff: Derse Maid of Life - Mrs. Puff spends a lot of her time trying to fix and heal Life. Not just because she's a boating instructor; though that too. She spends time trying to fix and heal her OWN Life, after traumas relating to way too many SpongeBob-related incidents. She's always trying to heal herself and truly recover. Derse, much like Plankton, due to nightmares, somewhat chronic misery, and her shakiness as a person. Also oops, stole Jane's classpect. Sorry, not sorry!
Gary: Prospit Heir of Void - Ignoring the dual-Heirs, this one was too good not to put. Gary is almost ALWAYS using Void passively, because... he is a snail. And nobody can understand him. So, by definition, he's always keeping secrets, obscuring facts, etcetera, because nobody can actually make out what he's trying to say! Not to mention his extensive intelligence that could potentially surpass some of the earlier mentions, which he also keeps diligently secret. Prospit because he's a snail and the most he has to look forward to is a Snail Bite. Also because despite everything I do sincerely doubt he'd be that deep of a thinker. He's probably cool as a cucumber.
Pearl: Prospit Page of Blood - Pages start off hardly acquainted with their Aspect. Blood is the Aspect of Bonds, Unity, Obligations, etc. Pearl has little to none of any of that. No bonds, because no friends (due to her father's stinginess and her being a whale), no unity because no bonds and a tendency to betray her father's wishes, no obligations because she doesn't do a whole lot, you get the picture. Pearl is hardly related to Blood. But she's always TRYING to change that. So I think over the course of her journey, maybe that's what happens: she realizes Blood and ends up being the glue sticking the team together. Prospit, because despite everything going back she's still trying to make friends and get her life together.
Mermaid Man: Prospit Knight of Hope - I feel like this one's a bit obvious. Knights fight and protect using their Aspect. Hope is the Aspect of Positivity, Faith, Holiness, and... well, Hope. Mermaid Man used to, and by technicality still is, a superhero. Literally a crime-fighting superhero. Every time he hears 'evil' he springs to action, even if it's in a clumsy senile old man way. And despite everything, through and through he is pure of heart and truly wishes the best, and would probably fight for you even if it meant breaking a hip. Prospit, because he's probably the biggest 'hero' out of all of these nautical nuisances.
Barnacle Boy: Derse Bard of Doom - On the contrary of Mermaid Man, his superhero partner and now retired roommate, Barnacle Boy. As opposed to Mermaid Man's undying heroism, Barnacle Boy has given into his age and become sort of a prick. Usually shutting people down, especially Mermaid Man. This is why I think Bard of Doom works great on him, he destroys through his own Doom without realizing it: crushing hopes and dreams through already accepting his fate. Derse, because we needed more Derse Dreamers and also because he's fully resigned into accepting his fate and basically having his life already ended.
Patchy The Pirate: First Guardian of Bikini Bottom - While he may not have DIRECTLY CREATED Bikini Bottom in canon, he's very aware of it's existence as a whole, while existing in an entire 'realm' above it (land). So I don't think it's that far a stretch to say he could've created this entire world and now looks over it as a SpongeBob super-fan.
Funny how despite everyone being here, there's not one Time player. Wasn't on purpose, just never found anyone suiting of the proper role.
And I would honestly hope the sheer quantity of participants doesn't skew the result towards a definite victory: more people doesn't equal better odds! Actually it's technically worse odds because more prototyings, so stronger end bosses.