So for the sake of spreading information and knowledge (because knowledge is always helpful), I thought I would share a way in which we've been self-identifying when we've split. Ideas, qualities, etc.
The Biker is the most [...] volatile. He is active and [...] outspoken. He says this idea is 'bullshit'. We're sorry.
The Mechanic is quieter. He wants this to be fixed, so the name seemed to fit. He has concerns.
I've been called [...]The Hippy. Mostly by the Biker. I guess I'm more 'sensitive', which isn't a bad thing.
The system is a little strange, but it has been helping us. We hope it will help you too, if you encounter one of us. I suggested nametags, but that made the Biker violent.