Ah ha. Must make things interesting then, especially if they all behave differently.

[And someone who doesn't know about robots he'll guess]

Basically an animal not born, but constructed out of metal. Let me show you. Black, can you come here?

[This he said to someone else, not Hiccup. Out of view of the camera, there was the sound of metal moving and then Shiro had to adjust the phone as the black lion came over and sat beside him, leaning over to see what Shiro was looking at since it had been called over]

This is Black, one of the lions of Voltron. It's... smaller than it would normally be.