Hello everyone! ^^
I have this blue 5* team at the moment:
Miki Frida Ariel Alice Misandra
and i can’t decide for the next blue: Fenrir or Glenda?
Fenrir is a good sniper but glenda has the 40% special buff…actually i do not know which position would be best for her 
Just FYI, +40% special skill damage literally means adding +40% damage to the special skill. It’s not multiplicative.
So the buff isn’t exactly as good as it seems. Not on its own anyway – she works best with an attack buff like Kiril’s, in my experience from beta.
If this is for defense, I don’t think Glenda is better than your Alice. Neither is Fenrir imo. So I wouldn’t worry about defense.
I’d go with Glenda if you’re lacking 5* cleansers. Otherwise I think Fenrir is better.
I have Ariel maxed as well
Glenda imo. She hits 3, buffs, cleans and gives minions from elemental link. For mono attack team pretty fair deal