He's a critical component of a potent right edge alongside Sonny Bill Williams, Shaun Johnson and Roger Tuivasa-Sheck.
Whare might not have made it to the World Cup if he hadn't left Manly at the end of 2012.
He played 25 games for the Sea Eagles across three seasons as he served an apprenticeship under Steve Matai and Jamie Lyon but needed to move if he was to graduate to the next level.
He moved across town to Penrith, who were in the early stages of an ambitious five-year plan, and succeeded Michael Jennings, who was a high-profile casualty of coach Ivan Cleary and boss Phil Gould.
It was difficult, but Whare became a critical element in a squad that came close to the top eight.
"My main goal was to play more consistent and regular footy," he said. "At Manly I didn't get much game time over those three years so went to another club. I needed more game time to give me a chance of making the World Cup squad.I'm very happy with the move I made.
"I was there [Manly] for three years and learned a lot off Jamie Lyon and Steve Matai. They took me under their wing and I couldn't have learned any more from them. But I thought it was time to move on and start my own career at a new club."
Whare has now scored 14 tries in 49 NRL games, including a hat-trick on debut in 2010, was named man of the match in the Kiwis' opening World Cup game against Samoa and is seen as one of the best young centres in the game.
He's on his first major tour - he previously ventured to Britain with Manly for the World Club Challenge but didn't play - but doesn't seem to get overawed by much.
"I love playing these big games," he says. "I played my third test against Samoa and each game I get more confident. Confidence is high at the moment and I can't wait to get out there to do it again."
He gets his next chance tomorrow morning against a Papua New Guinea side who have already been eliminated from quarter-final contention. They threw away an opportunity to beat France in their opening game when they missed a penalty on fulltime in front of the posts and were then well beaten by Samoa.
Kiwis coach Stephen Kearney has opted for close to a full-strength lineup for the game - Simon Mannering, Frank Pritchard and Jared Waerea-Hargreaves are being rested - in the hope of developing combinations.
The biggest question mark is at left centre, where Bryson Goodwin gets another chance.
He benefits from being the only left centre specialist - Krisnan Inu plays right edge - and Kearney would probably need to opt for a second-rower - such as Mannering or Alex Glenn - if Goodwin fails to convince against the Kumuls.