He'd only seen her once before, and they'd never met. On the television, he'd watched her with Ariadne, before the mentor had been executed. She didn't scare him, exactly - it wasn't fear that he felt - but the hair on the back of his neck raised when he heard Ferox yelp. He immediately came over to soothe the creature.

The fact that he flashed a look of pure hatred up in Penny's direction? More or less a rebellious accident.

"Ignore it, Ferox," He reprimanded the creature quietly as he got him to lay down. "Wait, and you'll have plenty to eat."