Hi and welcome! I am Char and I play these three oldbies: Ace Attorney | Maya Fey | turnaboutmedium Full Metal Alchemist (manga) | Pride | fathers_pride Full Metal Alchemist (manga) | Winry Rockbell | cutewrenches
and introducing this guy this month: Sora wo Kakeru Shoujo | Leopard | goldenorbs
Incidentally, Maya will think that Kallen is the Red Ranger from a sentai team, because long story short, she's a tokusatsu dork and rather misunderstood Kaguya's explanations earlier. After she kind of got a Zero outfit for her Halloween costume last year.
I don't think Winry and Kallen have interacted before, but she would love to hear about KMFs. XD Just de-emphasize the part where they are tools for killing.
(Incidentally I also play C.C. over at trans_9 technically since I've been inactive to hell for the last month or two until like, two days ago.)