I imagine Growlybear to be an actual growly bear based on her postings though she probably isn't. Bears don't type, do they?
I imagine cologne to be a lady of German descent. It's just a hunch, dunno. I'd say she's quite gentle judging by her avatar photo.
I think Karma is a thoughtful soul who believes what goes around comes around but is hopelessly confused hence the constant avatar changes. She's also a bit mad, which is fair enough.
I imagine brisket to be a refined elderly gentlemen who charms everyone he meets and probably has tons of friends through being genuinely nice.
I'd say MrMince (Meaty) is a bit of a lad who likes a drink and footy and a bit of fun with the ladies (wahay). We've had her ups and downs but he's a top lad imo.
Garage Joe I imagine to be a sort of closet intellectual who nonetheless has his feet firmly on the ground. That strange language he speaks in enthrals me, I wonder what it is? Another top bloke.
That's it for now I shall dissect more people later just because it's a free country and I can