Clonus

Okay, let's see what comes to mind.
 
Regarding Olympia, the name plus her apparently electrical powers sound like they're meant to evoke Zeus. In that case I'd consider something similar from a different mythology. I'm thinking of Vajra, the weapon of the Hindu storm god Indra.
 
In a similar vein, I think Tjack is onto something by looking at warrior women from another mythology; but "Valkyrie" sounds a little too on-the-nose, since the character's name isn't "Amazon." A comparable permutation would match more closely. How about Valkyrian?
 
For Enigma 7, something containing Kryptos, the Greek word for "hidden," could be an appropriate name.
 
I think I'd exchange Briar Rose for something non-botanical, but with similar implications. What do you think of Barbed Wire?
 
Translating the Blonde Fury to something close sounding, like Red Rage, might come across as a bit too precious. But from your description, I immediately thought of Femme Fatale.
 
"Scarborough Faire" is a stylish name. For that I would want to look at an archaic noun with similar implications of entertainment. I would suggest Jongleur.
 
 

Olympia becomes....Hera
Amazonia becomes....Valkyrie
Enigma 7 becomes....Galatea
Scarborough Faire becomes...Wicca
The Blonde Fury becomes....Rage
Briar Rose becomes....Thorn

I'm getting mixed messages here.  

I'm getting mixed messages here.  

I'm getting mixed messages here.  

I'm getting mixed messages here.  

Be quick.  

https://img.huffingtonpost.com/asset/5d024de62100003711ef7268.png?ops=scalefit_630_noupscale
 
Contains vulgarity.