I think Aiden Brooks straight-up is neurodivergent (Specifically ASD, Autism or ADHD/ADD, now I MAY BE WRONG BUT JUST STICK WITH ME.), and I have reasons for thinking so (some of them are not fully accurate, but this is from research i've done multiple times as someone who watched Disventure Camp since its debut as Total Drama : Adventure) :
1. Repetitive behaviors : In season 2, he said 'shut up' literally every second.
2. Hyperfixations : He INTENSLY loves musicals and got excited in both musical episodes when it was told the challenge is the musical challenge. (Now im gonna name an eh example) One of the reasons he was close to Evie is because of the 'advantage', and he was hyperfixated on it ever since he joined the fans.
3. Hyperactivity : When he gets excited, he sorta 'bounces' around, mixed with the hyperfixations for musicals, in his musical performances (Which were Piggyback and Sleepaway), he does the performances with a lot of energy and emotion.
4. Impulsivity / Emotional Sensitivity (I'll call it that cuz im unsure) : He gets intense emotions, whether he is happy or upset/disappointed
5. Difficulty in newer environments : This one is kinda confusing but its also understandable. In season 2, for starters, he was kinda wierded out when James gave him that side-hug, you remember? He also seemed surprised when Oliver spoke to him and he seemed at a somewhat loss-of-words and nervous. And in season 5, when he joined the fans team, idk if its just me but he seemed kinda pissed and shit and in the latest episode (SPOILER), he wanted Ara, Nura and Evie to help him vote Oliwia out to be able to merge and get back to his friends, and why would that be? Because he has gotten used and feels comfortable in his usual environment and friend-circle, being the people who he was with on previous seasons.
6. Naivety : He trusts people too easily and tends to get stabbed in the back afterwards.
7. I guess I'll call it sensory/fidgeting : As we saw in S2, he has a teddybear and when he and James were in the tent while there was thunder which he is scared of (forgot what episode it is, forgive me), James sorta replaced the teddy because it wasn't with Aiden at the current moment. [GREETING PROOF : https://vt.tiktok.com/ZS9A8UjVq/ ]
I think there are more, but these are the first 7 I noticed. If you noticed more symptoms of ADHD/ADD/Autism/ASD you noticed Aiden having, tell me what they are and i'll add them :^