Main character, Has to deal with Tohru, Ilulu and Lucoa, office worker, Mean, a bit sarcastic, and grumpy

Maid Of Kobayashi, has to deal with Kobayashi's messes but she's Eager

The Massive breasted Former Dragon Goddess Who Has extreme Pervertedness and Extreme sexualization in her body

Basically, she's the worst behaved out of all of them, Kobayashi has to punish her often, she has a super curvy body despite her child look, all dragons are potentially thousands of years old