I once created a girl that was made to die. She was made along with a "dark twin", whom I totally intended on surprise-dying against her when the inevitable fight against her finally came up. However, I felt really guilty about that and changed my mind before I got there, so the other players saved her life and managed to convince the "dark twin" to join the good side (after some suitably dramatic doing). She was never the main character of the roleplay, she was simply one in the group. Not one to lead, but, yeah, had it been a movie she'd probably just have been "one in the team".

As for how I wrote her, I made no specific difference in how I wrote compared to otherwise. I didn't want the others to suspect what I was doing. I did ensure she didn't have any loose plot-threads lying around unsolved, and ensured her dark twin was her final goal. She had a rather depressing past, but she was an uplifting soul that mostly smiled though those who knew sadness could sometimes see it in her eyes. I thought it'd be a new experience to attempt to play someone I intended on killing. ... Of course, that didn't happen, but I simply wrote her like any other character, though special point might be made that I made her a cheerful young girl that talked to people and tried to make relationships before her death. Wouldn't have had as much impact if she was a loner and then died, after all. ... Then she didn't die because I changed my mind, but, yeah, still. Haha.

I probably didn't actually have a good reason to kill her. I just, well, wanted the experience. Not sure if I factored in the others at all. I wanted to try playing a character I knew would die? ... Well, how nice of me. I even failed. XD ... Nope, not sure I can answer the question. But, since I once did make her for that purpose, I thought I'd mention her here. Haha.