He's the biggest threat since Wo Fat, and he'll be back on Hawaii Five-0 this February.

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Gabriel (Christopher Sean) is making moves all up and down Oahu's criminal underground, and he won't drop off Five-0's any time soon. If his play to take out the island's crime juggernauts didn't turn heads, his next battle certainly will.

"He and Chin finally face off in a real significant way," showrunner Peter Lenkov teased, according to TV Guide. "He comes back in a way that, it's do or die time for us."

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The upcoming meeting will presage an April appearance as well as a "huge" Gabriel-centric penultimate episode. If you're worried about what the evil mastermind might try next, Lenkov doesn't have any calming words to assuage your fears.

"He is really going to leave some scorched-earth this season with some of the stuff is going to do," Lenkov warned, according to TV Fanatic. "I think some of the stuff he does in the first episode is pretty tame compared to what is going to do later on in the season."

Find out more when Hawaii five-0 returns Feb. 12 at 9 p.m. ET on CBS. Click the video below to see a preview for the series' latest episode, "Umia Ka Hanu."

Tags: Hawaii Five-O television CBS