This chapter is gonna be less of an actual chapter and more of a list of random headcanons. So stay with me.
Karen REALLY dislikes Chloe. Like, a lot. She thinks she's a pompous a-hole. And Queen Bee did NOT help matters in the slightest. She thinks she was basically a disgrace to bees everywhere.
No one in the team was comfortable with Chloe making her superhero name "Queen Bee" due to the supervillain of the same name.
In the same vein, Jaime and Marinette hate Janice "Beetle" Lincoln for disgracing beetles with her criminal activities.
The others consistently try to use Peter's status as a (technical) Avenger to get into Avengers Tower or other things.
Jaime ships Ladynoir like FedEx.
Peter ships Adrienette like FedEx.
Karen is a firm believer in the "both is good" philosophy.
Karen didn't realize how similar her suit was to the Wasp's suit until Peter told her.
Jaime and Karen constantly argue over who has worse romantic skills between Peter and Marinette.
Jaime once argued that Batman was scarier than Daredevil. Then Peter introduced Jaime to Daredevil and the dude quickly shut his mouth.
Peter and Connor Kent both jokingly refer to each other as "Nathan Drake."
Peter once heard Wally West talking and went on edge thinking it was Scorpion.
Peter's the only member of the squad that can handle horror movies, and that's because his spider-sense warns him of jumpscares.
The team doesn't have a definite leader, but if you asked the members, they would say it's Karen.
They looked for a fifth member to join the team, alas to no avail.
The way they get to each other's houses is Boom Tube tech modified by Peter and Karen.
They have a whole list of team names. Arthro-Squad was just the best candidate.
They argue over who has the best Rogues Gallery.
The team as a whole does not have an archenemy yet, much to Jaime's dismay, as he finds archenemies one of the coolest parts of a superhero.
Spidey and Chat Noir consistently have pun-offs, much to Ladybug's anger.
And that's my list.