The sudden closeness doesn't seem to bother Phalanx, but the reprimand and the warning certainly hit home. The creature shies back into hunched-up shoulders, and their voice and whole persona becomes a little more delicate.

"Sorry... sorry."

Their hair doesn't change back, though. And when they peer at Robin around the edge of their hood, their startled eyes are now a striking shade of human blue.

If they remain this agitated, who knows what will shift next.