Victor Garber has had a diverse acting career, belting out showtunes as the Music Man, heading up the most dangerous spy agency in the world in J.J. Abrams' "Alias," and playing Vice President to Samuel L. Jackson's President in the just-released "Big Game." But really, isn't that all small potatoes compared to being a superhero?

As Professor Martin Stein, Garber is one of the newest faces on the superhero scene. Along with his co-star and partner in superheroics Ronnie Raymond (Robbie Amell), Garber's Stein forms the hero known as Firestorm. Having debuted on "The Flash" and appearing in several episodes throughout the season, Stein is slated to co-star in The CW spinoff series "DC's Legends of Tomorrow" in 2016.

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Though Garber denies having much knowledge of what to expect when Stein stands alongside the Atom (Brandon Routh), White Canary (Caity Lotz), Captain Cold (Wentworth Miller) and other DC Comics heroes and villains, he tells CBR News he's ready for the challenge. And, perhaps even more importantly, he's ready to face the challenge of heading to San Diego in a few weeks for his very first Comic-Con International appearance.

CBR News: The most recent incarnation of your TV career, as Dr. Martin Stein on "The Flash," has been very interesting. What was most exciting for you about working in a superhero universe?

Victor Garber: Well, first of all, I couldn't have been more surprised that it came my way. Greg Berlanti who created those shows is someone I worked with years ago on a TV show called "Eli Stone," which was also quite innovative and different. He just called me up one day and said, "Listen, I want you to play this professor. And here's the story." And I said, "It sounds great."

Again, I trust Greg, and he is one of the best writers, and the people he works with are great writers, so I knew I would be looked after, and it's proven to be that. I love the cast. I love the people I'm working with. And I think it's kind of a hoot that at this point in my life -- I mean, I'll be going to Comic-Con [International] for the first time, so that is daunting, terrifying and exciting!

You're going to have a blast, I promise you.

Really?

You will not be prepared for the amount of love from the fanbase that you're going to receive.

Wow -- that's a nice recommendation! I mean, our new show hasn't even been on yet, and we're already going to Comic-Con, so that's kind of exciting.

What did you find that you enjoyed most about playing Martin Stein?

His eccentricity -- the fact that he's kind of like an absent-minded professor. There's a comedic aspect to the character that I like, and also, his good heart. He's arrogant, but the bottom line is, he's a good guy and he really just wants things to be right. I liked that aspect of him. And the fact that when he is part of this -- he's a metahuman, and he's conjoined with this other entity who, together, they are Firestorm -- I just thought this was kind of wild.

Garber Says Amell to Join Him as Firestorm in "The Flash" Season 2 Premiere

Are you looking forward to the day when we might see Martin in control of Firestorm and even get to physically represent the superhero side of it?

You don't want to see that! [Laughs] You really don't. No, that's the best part of it. Every time we become Firestorm, I can be in the trailer or go home.

I know you have to keep many of the details about "Legends of Tomorrow" close to the vest right now. What are you able to say about your experience getting it up and running so far?

Well, the fact is, I haven't read a script, and we haven't shot an episode yet, so I really don't know. You know as much as I do, frankly, about what it is, because the promo that we shot when I was doing "The Flash" where we're all on the rooftop. And that very expensive, kind of elaborate introduction is really all I know.

I just know that there were a lot of people together that, normally -- it's like the most dysfunctional family ever assembled because we all, together, are the only force that can change or can achieve the goal of eradicating a worse people. So we're good and evil meet worse. And that's kind of the drama of it. I don't know anything more than that, really.