Uhhh,I could give you a TON of Shadow names. Stop begging me not to. I'm going to do it.
Shadowstar(kind of prefer it if you don't take that one because its my old username,but whatever)
Shadowfire(taken)
Shadowflower
Shadowscar
Shadowbreath
Shadowfox
Shadowtooth
Shadowteeth
Shadowfang
Shadowclaw
Shadownight
Shadowmoon
Shadowheart
Shadoweye
Shadowwolf
Shadowpaw
Shadowsun
Shadowflame
Shadowflare
Shadowcat
Shadowpup
Shadowrun
Shadowrunner
Shadowwind
Shadowfish
Shadowsea
Shadowface
Shadowtail
Shadowwing
Shadowflight
Lot more. Long story short,all combinations are in no way taken.