They have an array of stars who are the envy of every other NRL club, but Roosters assistant and defensive coach Craig Fitzgibbon is most in awe of his side's blue-collar ways after surging to their 13th title.
Having forged their minor premiership on the back of a near watertight defence, the Tricolours were forced to claw back Manly's match-winning lead early in the second half of the grand final.
Fitzgibbon, whose grand final debut came with St George Illawarra in the 1999 decider, said he never doubted the spirit of his side.
"What we're most proud of is that we got absolute commitment from the players," said the man who still commutes to Roosters HQ each morning from his Illawarra home.
"They don't ask questions, they never question what we offer them, they just take on board what we offer and just do it. As a coach it makes your job really easy.
"[Personally], it's just been really, really time demanding and hard this year, but also I've appreciated it because I like working with the players."
Head coach Trent Robinson knew his galaxy of stars were capable of halting the Roosters' 11-year premiership drought, but questioned whether his inexperienced coaching staff could get them there.
With Jason Taylor and Fitzgibbon - only in his second year of coaching - as his right-hand men, the rookie head coach challenged his back-room staff to get the best out of the players.
And Robinson even aired his doubts about his own ability in the immediate aftermath on Sunday night.
Added a surprised Fitzgibbon: "Did he say that, did he? I've got to say I do remember a point in the year where he said, 'these guys are good enough and it's up to us whether we're going to coach them the right way to get them there'.
"That's the way he was feeling at the midway point of the year. He felt like we had good enough players and he felt like the team was ready to be pushed in that direction.
"I remember early on in the year we were a little bit down and he took a massive punt on me giving me the job as defence coach in my first go, so I owe him massively."
Now Robinson, with the help of Fitzgibbon's sculpted red-white-and-blue wall, has completely turned around the Roosters' glamour-boy image.
"I know we're seen as the wealthy club, the high flyers, but this win has been built on a foundation of hard work," Robinson said.