Perhaps it starts out as that, but after gaining his respect he has a change of heart and seeks purification for the good of dragonkind.Hehe a suspicious kobold prophet that got shady plans for PC, camp and draongkin in general Oh wait that would sound too grim would it?
Or perhaps he falls in love with ember and can't bring himself to do whatever it is he planned, and tries to become a actual dragon and ends up being the PC/Ember's third.
We have plenty of options where we can corrupt a pure companion, what about an option where we can purify a corrupt companion?
And as i'm writing this, i realize how much i really want to see a kobold husbando happen.
Just give him some skill or such. Like mage or prophet or even alchamist if we don't have enough of the later.
Its no fun if he is a deadbeat that squats in the camp.