I agree, Bolin’s not with the Krew / in Republic City anymore. My guess is that during the time-skip he moved to Zaofu to work / live there (for / with Opal? *shrugs*)
But I don’t think he’s going to be working for Kuvira once she and the rest of the metalbender / mechatank army go “bad”. Seeing that he’s fighting another mechatank and running through a wooded-area, he’ll know that whatever Kuvira’s doing is not good and try to get away to warn Korra and the others or get help.
So I was rewatching ‘Old Wounds’ while still reeling…Remember the Mecha-suit we saw Zhu Li driving in that trailer?
VARRICK WAS TESTING A PROTOTYPE THE ENTIRE THIRD SEASON AND WE HAD NO IDEA AT THE TIME BRYKE YOU SNEAKY LITTLE…