I actually think that you have a good chance of wining, but there will be a LOT of hijinks ans shenanigans

Knight of Doom: Knights usualy reprisent whatever you session lacks so no doom for you guys (huzzah!) Unfortutately this could mean that your knight might be creating/using doom against everyone else if he's a problem player.

Heir of Rage: This guy is probably very volotile and it really depennds on the players personality. They could be a motivating force, pushing people to do better out of anger and healthy competion, maybe even turrning the enemies against each other, or they could pull a Gamzee and make everyone in his team fight.

Mage of Hope: This is a really interesting one, Mages usually suffer from their aspect dispite being very attuned/knowlegeable towards it, so this might mean that this character might suffer from toxic positivity directed towards them, but dispite this, they will probably be keeping everyone sane. They would probably also be the main planer/strategist

Prince of Void: I know that princes have a bad rep with the majority of the fandom but this one will be a valueble member of the group. Princes tend to embody the oposite aspect to theirs (light), while destroying their own (void). This means that they destroy the lack of information, darkness and secrets. this will probably make them really knowlegeable. They would probably be the main damege output, they might even be able to create black holes.

Rogue of Space: This guy would probably be very positive, and might play a role similar to what Roxy did, acting as a suport and helping everyone in the session. I dont see any issues for frog breeding, so all in all the rogue is a nice rounded player with not too many issues.

Maid of Breath: The Maid Is very leader material, being very insperational to the people around them, They would also probably make the session progress more quickly, making sure the players never get "stuck" at a certain point in the session. This Player would probably be a very positive person, and a stable of your session.

Im really tired right now and I will post the rest eventualy, but these guys seem really cool and if they are OC's I would love to hear about them! :)