I
definitely have a 'type'
Loud
Usually, I just think of a few traits/personalities that I think would be fun to play or places that I think would be fun to have a character from and develop them from there. Then, I just 'let them loose' so to speak and see where the RP takes them

So, when developing Archer, for example, thought it'd be fun to play a sort of brash, insensitive type and the rest just went from there. So basically, I don't usually
intend for them to be so loud

I also try not to plan them much more than what's in a usual bio, so they don't have an 'ending' so to speak (makes it easier to bring them back, if I wish). I love when one of my characters surprises even me, which happens much more often than you might think.....