Jordan Gavaris transforms for ‘Orphan Black’

Clone Club is back in session.

The BBC America cult hit “Orphan Black” — which made a break-out star of Tatiana Maslany for her deft portrayal of seven clones (and counting) — premiers its second season Saturday at 9 p.m.

And with it returns fan-favorite character Felix, Sarah’s (Maslany) foster brother and BFF, played by Canadian actor Jordan Gavaris, 24. As Sarah’s confidant and de facto member of Clone Club — the nicknamed alliance of Sarah and her fellow clones Alison and Cosima — he gets drawn into their high-stakes world while lending some comic relief to a very dark script. It’s a role Gavaris has fully settled into in Season 2.

“I think I was very nervous in Season 1 about making sure the character was formed and that the audience knew exactly who he was on screen,” Gavaris tells The Post. “This season I got to settle into it a little more, trust that I knew who he was and just follow my impulse.”

Since “Orphan Black” premiered in March 2013, it’s drawn critical praise and a passionate (if niche) fan base — which means the creators and cast have sought to up the stakes this year with the knowledge that people are watching.

“We definitely didn’t want to sit back and cool our heels in mediocrity,” Gavaris says. “We tried to approach Season 2 trusting we knew the characters, knew the world, and where do we go from there? Season 2 is all about … let’s climb even further down the rabbit hole.”

In the case of Felix, he’s started to grow fed up with always having to bail out the Clone Club and has begun forging his own alliances, including his relationship with soccer-mom clone Alison, a pair Gavaris describes as a “Laurel and Hardy comedy duo.”

The role’s combination of comedic and dramatic elements was a welcome change for Gavaris, who was frustrated with being pigeonholed for high school parts on the CW and TeenNick projects because of his young looks (former credits include “Degrassi” and “Unnatural History”).

To play Felix, he undergoes a complete physical transformation — eyebrows are tweezed, hair is grown longer and dyed, skin isn’t tanned and he loses about 10 pounds. The British accent is also faked (he was born in Ontario), although it’s so convincing, he’s even fooled some of his castmates.

While the character makeover means he never gets recognized on the street, Gavaris has realized the popularity of “Orphan Black” in other ways, like during the show’s appearance at San Diego Comic-Con last summer.

“[That’s] when I realized … we’re maybe not reaching the major media of pop culture, but we’re definitely developing quite a voracious fan base,” he says. “We are constantly impressed with the passion and commitment to the show and how the show has affected [the fans].”