I was thinking recently of what classes and races of D&D that each hermit would fit into so I'll be just listing down my ideas here.

Grian
Race - Aasimar (angel people)
Class - Arcane Trickster (I love the idea of Grian using magic to prank his friends)

Mumbo
Race - Elf (Mumbo is the tallest hermit in my headcannons so it only makes sense he would be a tall race)
Class - Artifactor (the techies of D&D)

Stress
Race - I'm debating between Human and Halfling(Hobbit)
Class - Cleric (Life Domain) with proficiency in Alchemy

Iskall
Race - Human
Class - Paliden (It seemed to fit since fighter is too basic)

Ren
Race - Shifter (Werewolf variety with some different rules)
Class - Bard no question.

Scar
Race - Human
Class - Wizard (School of Trasmutation) with Jellie as his familiar

Cub
Race -  Human
Class - Warlock (idk what the Vex are so still need to figure out what patron kind)

Doc
Race - Still not sure but leaning towards Half-Orc
Class - Multi-classing as both a Artifactor and Fighter

False
Race - Human
Class - Still not sure if I should do Fighter or Barbarian.

Etho
Race - Half-Elf
Class - Rouge (Don't know what Subclass)

Impulse
Race - Human
Class - Artifactor (easiest hermit to decide)

Everyone else I have no idea what to make their class, race, or both..