Lil' Bro

Lil' Bro is a character in the Marvel comics series NYX and NYX: No Way Home.

Biography
He is the younger brother of Bobby Soul, who takes care of him.

Autism
Lil' Bro is never said to be autistic in the story itself, but it is confirmed in the Previously on section in various issues of NYX: No Way Home.

He does not seem to communicate, either verbally or non-verbally. He seems to need full-time care; his brother helps him with feeding and usually carries him around.