[ Wow, asking the hard questions there, Yuuri. Lockon's too used to his immediate circle know exactly what a Haro is. ]

There's sort of a wavy line around him that makes it look like he's got a mouth. It's right under his eyes, which light up when he speaks. Um... he's got flaps that looks like circles on the top and bottom when they're not moving.

[ Nailed it. ]