- stimming (waving his hands above his head, foot tapping, finger tapping, rocking back and forth…)

- Has a sensory object (his fuzzy pink blanket)

- Says/does things inappropriate for the situation (… Basically like every episode with him in it)

- shuts down (facing the wall when Wander was singing to him in My Fair Hatey, The Funk)

- insensitive towards other people’s motions and needs

- Trouble with making/maintaining relationships (friendship with Peepers)

- social awkwardness

- self centered

- needs constant attention/affirmations

- short temper

- inappropriate outbursts of emotions

- trouble with focusing on certain tasks, easily distracted (The It)

- can be intensely focused on certain tasks (destroying Wander)

- surprisingly intelligent (building the HATE-RV)

I don’t know, I’m not an expert but these are just things I’ve noticed in my own behavior and others like me who have autism/ADHD. If anyone wants to add to this, feel free to do so