Sylar, the killer on the NBC series "Heroes," is driven by his own forces, said the actor who plays him.

"I think he's somebody that sort of got overtaken by a desire that he didn't expect to overtake him as powerfully as it does," Zachary Quinto told SciFi Wire. "And it starts from a place of really just wanting to be valued and desired, and it evolved into something that is really insatiable. And that's sort of what carries him: It's this insatiable hunger. I think he enjoys it to a certain degree. I think he certainly is aware of what he's capable of, but I don't think that it's something that he is sort of going after for the sake of going after it."

Quinto said he is constantly surprised with the direction his villainous character is moving in.

"I had all these sort of expectations or preconceptions about where they would take it and how it would move forward," he said. "And every script I get, it's like a whole other 360 [or] 180 turn on a dime. So it's really going to go to places that I don't think people have any idea or any sort of expectation."

Quinto said he is eager to work with more cast members on the superhero-themed freshman series but understands if the feeling is not entirely mutual.

"There's a lot of people I've been waiting to work with," he said. "I haven't worked with Greg Grunberg. I haven't worked with Ali [Larter] or Leonard [Roberts]. I haven't worked with Adrian [Pasdar] yet. And we all talk about the desire to work together, but I'm sure they're all probably a little trepidatious to be in a scene with me, because it can't be the harbinger of all good things, right? But I've really enjoyed my time with Milo [Ventimiglia] and Hayden [Panettiere] and Sendhil Ramamurthy now. I'm working a lot with Sendhil in these episodes that we're shooting now, so that's really cool. And it's great, because it's such a diverse group of people, and everybody's so happy to be around and so happy to be a part of something that's so igniting excitement in people."

Heroes airs Mondays at 9 p.m. ET on NBC.