Phalanx amiably wanders and looks around as if this room is brand new to them, while Robin gets himself together. The blanket had been more like a lump than a cape when it had been pulled from the bed, so it's still kind of all balled up as Phalanx absently pulls it across their shoulders like a shawl.

They look over and follow Robin's attention down to their own feet at the question, immediately confused about it.

"I... walk around...?"

Though, at least Phalanx sounds confused about maybe why Robin is asking, and not about the simple fact that they have feet.