Timmy

yes

Yes. And also the one that was a finicky eater, tried to run away to home, and just seemed to be the camp misfit. But he overcome all that by the end of the movie, swimming the lake, then getting a pool put in his back yard.

"I happen to be a vegetarian". Lex, from Jurrasic Park

Yes, he was the one who didn't even want to be there and kept running away. It is funny because in 2001 I saw in People a Where are they Now? story about the actor who played him Cary Guffey and although he was remembered from Close Encounters, I knew him from this. The funny thing in the story was also that now he was a coach for kids-sort of like what Timmy would probably be doing today.