I roleplay only one character at present, Kisho Hosokawa. I adapt his character and back story a little to acommodate the setting in which I'm roleplaying him, and with every roleplay, I add a little to him. All of his backstory is from previous roleplays I have done. Myself, I've been roleplaying for about a year and a half in the form I'm doing it now, but since a child in various forms (mainly table top)
I try to only take part in one roleplay at a time, as I'm quite busy with a full time job and two bands, and i want to keep my character as canon with his own back story as possible, and too much can happen over multiple roleplays