I have two sonas, one for me when i'm on my meds, one for when i'm off.
I feel like two different people depending on if I've forgotten them or not,
so it makes sense for them to be separate. (risperdal is a hell of a drug)
Also, I have an executive function disability, which is hard to explain how difficult
it makes just living life. Basically every basic, everyday task i.e. putting on shoes,
not losing things, doing things in the right order like brushing your teeth first and
then eating or putting the keys in the car before trying to drive away, are governed
by a type of brain processing called executive functioning, and mine is severely
restricted. I thought that having my sonas looking for something they were holding
in their hand would just be sad and pathetic, and totally not befitting of a mighty
mage or nimble rouge, so I made one have a crippled leg and the other nearly blind.
Edit: I just realized I mixed up the teeth brushing thing. I rest my case.
Edit: I forgot to finish what I was going to say. My OCs are mostly or completely unrelated, rather than very similar with a few minor differences. an example is my unnamed black wolf archer that is after the demon that burned his face off. Sonas typically have more detailed lore and backstories as well.