The cast is totally in love with this season's newcomer

Whatever happens to his character, Cody Christian is a permanent member of the Teen Wolf pack.

Christian, 20, plays newcomer Theo in season 5, and the MTV show’s cast is almost as obsessed with him as the Pretty Little Liars fandom.

“He’s a phenomenal actor, he’s really passionate about his work,” Tyler Posey told PEOPLE at the ATX Television Festival in Austin, Texas, over the weekend. “He really loves being on set and is always asking questions about shots and setups, what size lens they’re using. He fits in so well on set.”

Holland Roden and Shelley Hennig pointed out that Christian was the very last one to leave the set on their last day of filming, even giving a toast.

Plus, “he looks great on screen!” added Hennig, 28.

“He does. He does look awesome,” Posey, 23, agreed. “He’s such an incredible actor and has a great storyline. It’s cool, because I think he influenced the storyline a little bit. I don’t know how in depth his character was before we started filming, but his character is in every episode. Some of us aren’t in every episode! He’s just so good. I could talk about Cody Christian for hours.”

And the stars say viewers will fall in love with his character – an athletic “lone wolf” who could put a wedge between Scott (Posey) and Stiles (Dylan O’Brien) – too.

“I’m excited to everyone to see him,” said Roden, 28. “I think they’ll really embrace him.”

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Teen Wolf

season 5 premieres June 29 on MTV.