Hehehe love this question
Nicktoons polycule please
They are all just dating each other, it only makes sense.
I think Jimmy would be a somewhat burnt out gifted kid who learned that the system of academia isn’t quite geared towards autistic people and drops out of grad school.
I think Spongebob loves his job at the Krusty Krab and takes as many hours as he can while balancing adventures with his new friends.
Timmy is extremely creative and while not completely the smartest kid on the team always thinks of the solutions outside of the box. He also struggled with school and ultimately stopped after getting an associates degree.
Danny I think struggles the most with his relationships and with mental health but he likes going to school for the routine of it. So he attends part time and is found ghost hunting the rest of the time. I think he’s a very private person and doesn’t really share a lot about himself but he really cares for his friends deeply.
I dunno what other nicktoons characters you want but I’ll pick a couple of my other favs
Zim I think finds that he really likes earth and sticks around though he does make trips to other planets. He refuses to admit that he’s made friends but grows very fond of the others as they work together on various adventures. I think Zim and Timmy would be a fucking hilarious duo
Jenny loves making new friends and tries to team up with the others as much as possible! I think she also really likes school because she can be very social and meet new people. Plus I think she’s very intellectual and likes to solve puzzles. Maybe she and Danny go to school together?
I’ve never seen people clump Chalk Zone in with Nicktoons but I love Rudy so much and I think he would be such a fun character to age up, could you imagine how fun his use of chalk as a power could be? I think he would be really curious and get into trouble easy. He’s also very creative and I bet he would have a career in art

Damn I really wanna draw nicktoons they are so fun and silly