Well I think it's quite easy to say that it will indeed get in the bag, it's for how long it will stay in the bag that real question is.
OMG did you seriously make a thread for this Ben? LOL can we all agree Lillie abused Nebby so hard in Sun and Moon? I'm waiting for the day when Nebby decides to redeem itself in the sequel and no Ben, Nebby will never return to the bag! Nebby might put Lillie in there instead... REVENGE!
I caught Nebby with a Luxury ball in the vain hope that it would stay inside. It's worked so far with some... varying results.
That actually is a good idea... with enough love and care, Nebby would most likely stay in the bag/ball. Soooooo would that mean that Lillie has been mean to the little cosmic cloud??
Maybe this time around, Nebby will be a complete shut-in who won't get OUT of the bag without serious effort on Lillie's part.
I would love if this was actually some highly plot-relevant point to the game. That would be amazing.