Aaron; Russell will appreciate an ability to follow orders, although difficulty with the temporal powers will be reasonable and a good place for them to focus if he's got a handle on his speed. Weapons, Russell can slowly work them into.
Amber; sweet summer child. Luckily, Russell is exceptionally patient and will continue to be even with the electric shit-show -most likely, they will hit pause on the weapons of any kind until she's not randomly electrocuting things.
Dani; although she's sadly just been transferred, I'm pretty sure Russell would've found her confidence with her ability and her willingness to work with the weapons refreshing -he might even crack a smile at her suggestiveness without encouraging it.