Frisk's Character: Khethra Brightriver
Oh my gosh, Frisk's rolls... their stats are so broken. It's not my fault! I did make sure they prioritized charisma because... well, even though they are technically a cleric, they will be playing like a bard. They've already failed and succeeded with Charisma checks for flirting (they were trying to get free stuff).
So, the in-universe reason Frisk chose cleric and not bard is because they are an accident prone kid, and Toriel is always patching them up with healing magic. As Kit, they get to heal others like Toriel heals them. The real reason Frisk is a cleric and not bard is because 1) bard belongs to me. When I play a bard, it's going to be my faceless cinnamon roll, not some fictional character's character. And 2) I compose music. I would get too caught up trying to compose music for that bard to play and I just... I don't want to put in all that effort.
Kit is the most complicated looking (costume-wise) and I'm just encouraging Frisk's main character syndrome. They look a lot like a paladin, but their overcoat thing helps them look more cleric-y, and I actually really like it. I like how Kit looks the most prepared for a fight, but Frisk would most likely try to stick with their pacifist ways. It's a stylistic choice that says something about the ability to be anything, and how your choices are going to matter more than what people think your choices will be. I don't know what I'm talking about, it's 2:30 in the morning, I should go to bed.