Erling Haaland:
Pep Guardiola's smile after just over six minutes of play said it all.
After the Norwegian striker's first glimpse of goal, the ball was already in the back of Copenhagen's net, with goalkeeper Kamil Grabara rooted to the spot.
It's now 19 goals in his first 12 appearances for City, 28 in 22 Champions League matches overall. Indeed, he now has more goals in this tournament than Luis Suarez and Rivaldo. Haaland's basically having a laugh on the club game's grandest stage.
Grabara did at least make one spectacular save to stop him getting another hat-trick but City's new No.9 still looks poised to break all sorts of records this season, and for years to come.
Pep Guardiola:
The first milestone on the City boss's checklist each season is qualification for the knockout stage of the Champions League.
That's why he started with such a strong team and why that box is now likely to be ticked in Denmark next week.
Copenhagen have been struggling of late, so they came to try to soak up as much pressure as they could and make it difficult for the Premier League champions. But they didn't.
City cruised to victory and Guardiola is now in the enviable position of being able to prioritise the Premier League until the New Year.
Aymeric Laporte:
It will have been a huge relief for the Spanish international to be back in the starting line-up after a frustrating few months.
With an injury-ravaged backline, Laporte played through the pain barrier at the end of last season to ensure City held onto their Premier League title.
But an operation in the summer meant that he has been forced to miss the opening months of the season.
He got his first minutes towards the end of the Manchester derby when United grabbed a couple of consolation goals, but this was a much more straightforward assignment.
Julian Alvarez:
Is there any striker in the world that would like to be battling Haaland for a starting place?
It's certainly a tough task for Julian Alvarez, who joined City from River Plate during the summer, and he will have to be patient when it comes to leading the line.
However, against Copenhagen, he showed that he can play just behind Haaland effectively, and offer Guardiola yet another attacking strategy.
And when a sight of goal came his way after the Norwegian had departed, his run and finish were perfect.