'Game of Thrones' Actor Tom Wlaschiha Talks Jaqen H'ghar and More

— -- On Sunday night's episode of "Game of Thrones," Arya Stark when looking for Jaqen H'ghar, only to learn that he wasn't at the House of Black and White.

So, what gives?

"We don't know who or what he is. Jaqen H'ghar has my face, and this is also something we're finding out this season, he's trying to teach Arya to become 'no one,'" actor Tom Wlaschiha told Vulture. "We don't know who or what is behind my face, or the other faces that the Faceless Men can put on. He has motives that he doesn't always show."

"With Arya, he wants something of her, but he doesn't tell her what that is, and she has to figure it out," he continued. "But the ultimate question -- who is Jaqen? -- has yet to answered."

Wlaschiha, who has not been seen on the HBO drama since season two, really enjoyed his return to the set. Calling it "amazing," the actor admitted that he didn't necessarily expect it.

"I always had a little bit of hope, but I didn't know. I read the books -- the first two books at least -- and I started to read some fan theories, and then it got too complicated too quickly. But even though it's a big change [from the books], the story isn't going to change," he said. "Jaqen is going to be a teacher to Arya, and he's obviously always had some secret. He's a bit of a magician, and there's some stuff that he does that Arya can't quite grasp in the beginning. So we will see some nice little surprises."

He hopes that Jaqen wants Arya to be a shape-shifter like he is -- at least in some sense.

"To me, in a practical sense, it is like Jaqen is saying to Arya, "Become the perfect actor." To leave her identity behind," he said. "For her to be able to take on a whole different persona, and not be recognizable, in order to get ahead with what she wants. That's what actors try to do."