Hmm, I guess I'll roll up a dude in the interest of gender balance (although I find the idea of an older professional like Johan surrounded by a cadre of snappy young ladies pretty funny). 
I thought about playing a character with a bit of 'muscle,' if expeditions should get hairy. It'd be good to have the manpower around. Another idea is a downtrodden 20-something in need of work - a lot of odd jobs under his belt, but never the right opportunity to shine. 

I'm still taking potshots at ideas, so don't wait up for me. I'll find something I gravitate to soon enough!