LAS VEGAS — Joe Harris was around from the start of this Nets’ rebuild, a culture change that lured stars Kevin Durant, DeAndre Jordan and Kyrie Irving. And he insists Irving — his former Cavaliers teammate — is a misunderstood talent who’ll fit right in.

“Kyrie, he’s got a big personality. He’s one of these guys that’s misunderstood. The way that he’s construed in the media is probably going to paint him in a light that is not necessarily true,” Harris said. “I’d say you could ask a lot of people that played with him and they’d all say that he’s a great teammate and a good guy to be around.”

Between the Celtics’ season going sideways and Irving’s Boston exit being ugly, plenty of questions have been raised about the All-Star point guard’s leadership and ability to fit into the Nets’ culture. But Harris — who has often been held up as the paragon of the Nets’ blue-collar ethos — vouched for his ex-Cavs teammate.

“None of us are perfect all the time. We’re all going to have ups and downs throughout the course of the season,” Harris said Monday during the Nets’ 88-85 summer league win over the Wizards.

“For him, unfortunately, he’s just in one of these scenarios where there’s so much more attention on him and people are paying much more attention to when he does have an off day. … I have off days all the time too, but nobody really cares when I have from an off day. People care when Kyrie does.”

That’s because Irving is a bona fide star. He hit one of the biggest shots in league history — his game-winning 3-pointer to beat a 73-win Golden State team in Game 7 of the NBA Finals — and was second-team All-NBA last season.

“I had a lot of good times with him. He’s a lot of fun to be around, whether it’s hanging out, playing video games, grabbing a drink, whatever it might be,” Harris said. “I remember seeing him have like 57 when we played against the Spurs in San Antonio. It was one of the better individual performances I’ve ever seen on the basketball court.

“He’s one of these guys where he’s very much must-see. … We all know the talent, but I got to see it for a year and a half every day. … He really is that talented. He’s a top-10 talent.”

Harris was part of the foundation that helped Brooklyn attract top-10 talent such as Irving, and a two-time Finals MVP like Durant, arguably the best player in the game and now the biggest star in New York.

As a matter of fact, Harris was one of the first pieces of the Nets’ core. He spent two seasons in Cleveland from 2014-16, but got hurt, traded to Orlando and waived in that second campaign.

Nets GM Sean Marks signed him off the virtual scrap heap to the NBA’s worst team. The Nets went a league-worst 20-62 in Marks’ and Kenny Atkinson’s first full campaign, but developed Harris into the top 3-point shooter in the league last year as they reached the playoffs. And they acquitted themselves well enough to attract Irving and Durant.

“Yeah, I’m a small part of it, for sure. But Kevin and Kyrie and DeAndre, they all said the same thing in terms of wanting to play with guys that we know know how to play, and we play at a high level night-in and night-out,” Harris said. “When Sean and Kenny got in and assembled the team you could see stuff transitioning and changing.

“It’s a slow process. You didn’t anticipate it happening as quickly as it did or in the manner that it happened; but at some point everybody could see the tide turning. … We had a great year this past year, but then to go out and make the splash in free agency, it solidified the come up of this organization.”

The Nets rescinded their qualifying offer to Theo Pinson over the weekend, briefly leaving him an unrestricted free agent. But they liked the second-year wing so much that they went ahead and signed him to a two-year deal Monday.

The Nets announced Monday they signed former Knick Wilson Chandler.