Hmm, BroTP, no?
I mean, Moblit is really just that side character who tells Hanji to be careful around Titans and anything else that can put her into danger.
It's his job after all.
Hanji: Eeeereeeen~! My sweet little Titan Baby, care to turn into your Titan for me??? Just this once?
Uh, I'm kinda busy...
Hanji: *pouts* awe...
Maybe later??
Hanji: *gasps and brightens up. Jumps into the air* YAHOO!
Moblit: Miss Zoe please be careful! *sweatdrops*
Awe~ see. They'd be cute as siblings. That cliche sibling pair, with one safe sibling and the other wild.
Makayla: he speaks the truth! *ruffles his hair*
*giggles and watches as Moblit tries to pull Hanji away from Titan* it never gets old.