Re: i've been looking for this, but my LCS never has it
Not certain. Possibly Dinah? Y'know, the singing part alluding to the Canary Cry? But the Lois and Helena ones were pretty easy to figure out. I'm figuring... we have a lady whose counterpart is somehow involved with (romantically or otherwise) Superman and Batman, so far, so why not Green Arrow for the third? That's only my best guess at a late hour when I'm tired, though.