"...Arms," Robin repeats, the kind of incredulous that turns into a laugh when he realizes his new friend isn't exactly wrong. Those very arms tighten a little around them, something like fondness, even if the situation is falling even further away from him.

A magical pile of ghosts, lost in Skeleton City, with no idea where they are. Probably no idea where they came from, or whose fault they were. Though, he remembers something else they said earlier...

"Okay. Who called you Phalanx?" Realizing that that would lead to any number of hilarious answers, he quickly clarifies, "I mean, who first gave you that name?"