I like John! he's the protagonist so i was a bit afraid that he might be the nothing-burger character while the other kids and trolls got all the fun and deep stuff but John's innocence (if that can even be the word to describe his whimsy) might be the perfect glue to hold all of it together. I'll say he's the most childish out of the kids, so that really grounds the whole story a bit, its quite charming.

He also seems to be the one with the most stable home and parent relationship even if he finds Dadbert a bit smothering, so im interested in seeing how that reflects on him later on.