If you're a fan of HBO's Westworld, you may have been relieved to see the return of the head of security, Ashley Stubbs, played by Luke Hemsworth. The last we saw of Stubbs in season 1, he had been attacked by the Ghost Nation hosts while attempting to rescue programmer Elsie Hughes (Shannon Woodward).

Though it had been confirmed that Stubbs was alive before last week's premiere, it was nice to see him back in action (and with that really cool beach rover). But what happened to Stubbs before he picked up Bernard? And perhaps more importantly, why does Luke Hemsworth's name sound so familiar? We may not be able to answer that first question just yet, but here's what we do know about the elusive Aussie.

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1. Yes, he's from that Hemsworth family. At 37 years of age, Luke Hemsworth is the oldest of the Hemsworth brothers. He's also the shortest—though at 5'11", he's hardly short, both Chris and Liam Hemsworth measure 6'4''.

2. He's married to Samantha Hemsworth, and has four children. They have three daughters and one son: Ella, Holly, Harper Rose, and Alexandre Hemsworth.

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3. He likes being the least famous Hemsworth brother. He told the Daily Telegraph, "I worry about the loss of anonymity, which is the one thing Chris and Liam would want back."

4. He led the way for the Hemsworth brothers to break into acting. With neither of their parents in the business—their father was a counselor, their mother a teacher—Luke was the first to get into acting, starring on the Australian soap opera, Neighbours, on which Chris and Liam later nabbed guest spots.

5. He is a fan of Australian activities like surfing and dirt biking. That's a dirt bike, right? I don't know.

6. He made a cameo in Thor: Ragnarok. When Chris Hemsworth's Thor returns to Asgard and finds his father Odin watching a play about Loki, the actor playing the role of Thor is—you guessed it—Luke. (Matt Damon played the actor playing Loki.)

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7. He built this.

No, he didn't.

8. He's a very supportive brother, and owns a lot of memorabilia.

9. He likes to take pictures of horrible, horrible things.

10. He has abs.