hm, my Yeee must make a timetravel backwards to fit within your world. She has water-control powers (magic) and descends from original Elfquest characters. If all that is ok for you, then Yeee can join in.
I have a Harpy elf character that could fit in your world, but is absolutely no merelf but a winged one. If that is ok for you ,then Aneret can join in.