Have they ever been so overwhelmed they had to stop and take a break from something?
Yes. Namine has many times. Its when she overstims and the world becomes too loud that she has to step back, take a break.

seen from Kuwait
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seen from El Salvador

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seen from Netherlands

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seen from United States
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seen from United States

seen from United States
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seen from Malaysia
Have they ever been so overwhelmed they had to stop and take a break from something?
Yes. Namine has many times. Its when she overstims and the world becomes too loud that she has to step back, take a break.
Do they have any verbal tics? Do they have trouble pronouncing certain words or getting their thoughts across clearly?
Namine has varying pitch to her voice; she tends to occasionally have childish voice raising when excited, and sometimes her words come off as being extremely loud. When she actually talks to others, its short sentences unless you’re extremely close to her. You might get elongated, normal sentence structure out of her.
She prefers to draw or write out her thoughts; speaking isn’t...her best suit.
double dimples
Anna has a double set of dimples on her cheeks she has to be smiling pretty big for you to see them tho.
What position does your character sleep in? (i.e; stomach, side, back, etc.) Describe why they do this.
Namine used to sleep on her back, but her father’s tactics caused her to adjust. She now curls up in a small ball on her side starting out in the night, but by the time she wakes up she’s ended up lying on her stomach, taking up only a small amount of space on her bed, arm occasionally supporting under her pillow.