[@Martian]

I helped man find the name Daybringer so lemme help you out

Gemini: Pretty obvious

Vaulter: Like a vault that holds something, as in the thing that holds Ezra

Double: Seems pretty obvious too

Blueshift: I’m picturing Ezra as glowing bright blue when he’s out of Thom’s body 

Or some variation of those.

Just off the top of my head