Coming up with superhero names for characters that don't have them

Alexis - Stonereaper

Sterling - Silverflame

Astra - Steamwave (combination of steam and soundwave, which are both of her powers in dragon form)

Benny - Deus ex Mechina (both because of his mech armors and because he can pretty much create whatever the plot demands)

Vasilia - Jaguarmor

Ana - Mariana (from her name, the Mariana Trench, and the word "marine")

Dresden - Petrifessor

Alsaya - Quickstep

Sammy - Slimezar

Vinda - Fienda

Sagan - Quelvis

I'm not sold on all of these, namely Sammy and Vinda, and I'm having trouble coming up with names for the rest of the New Mavericks and also Narrati. Then again, we still don't really know what Narrati can do.