Some of my Jonathan sims headcannonz :3
Jon is half Indian (on his mother's side) he barely remembers his mother's Indian food and feels extremely guilty for it
His grandmother (white) wanted him to live a somewhat normal life so he didn't learn or experience any traditional Indian things (mostly bc she didn't know and also she didn't want Jon to get bullied even more)
he feels very disconnected from his culture, he doesn't talk about it but it makes him really sad.
The one time he was able to shove information into other peoples heads, is when he was pulling Martin out of the lonely.
"look at me" and when martin looked he saw all of the love and yearning Jon has for him.
it's how he was able to get out relatively "easy" despite being so far gone.
While traveling to China and America he got "I 💙 China" and "I 💙 America" or whatever keychains to give to Tim hoping to rekindle their friendship, but Tim didn't want them.
instead he gave them to Martin
Let's just say those keychains survived the apocalypse
Jon really likes taking care of his hair.
he used to spend a lot of money on good hair products but after he started to get paranoid he started to have less and less time to fully take care of his hair.
When he was in the safehouse he looked at himself in the mirror a wave of disappointment and self hated rushed over him knowing he could have done better.
He has such a low spice tolerance it's insane, he thinks jalapenos are the spiciest thing in the world, I a single nibble would knock him out.
One of his favorite foods is buttered rice and peas with salt. (in his defense that's basically all he ate in college since he was on a budget and it's just kinda became a part of his diet)
He still listens to a lot of punk/rock/alt music.
he's been to multiple different concerts and is shocked that some people don't know who Ozzie Osborne or Gerard way is.