The Warriors have pulled off a major coup with the club signing Kiwi international Tohu Harris to a four-year deal from 2018.
The skillful back-rower has played over 100 games for the Storm and represented New Zealand 16 times since making his NRL debut in 2013.
Harris said he was thrilled about the chance to link up with the Warriors.
"I've had a great time with the Storm and I owe them so much for what they've done for me," Harris told warriors.kiwi.
"Coming home to play for the Warriors is a fantastic opportunity, though. The club has a great roster with so many Kiwi boys there and being back in New Zealand closer to family is a big attraction."
The Warriors also announced that Roger Tuivasa-Sheck will be the club's captain in 2017, with veteran Simon Mannering set to be vice-captain.
"These are critical decisions we've made in the club's best interests for not just this season but also for our future," Warriors coach Stephen Kearney said.
"We've given the captaincy a lot of thought throughout the offseason before reaching this point.
"Roger offers all the qualities we want from our players. He is a true professional in the way he goes about all he does, providing a wonderful example for players to follow. He's also one of our leaders and has many years left in the game.
"Simon will give him the support he needs as vice-captain. It's important to have him in the role because he epitomises everything our club stands for."