Fallout's low IQ protagonists fall into 3 categories
Fallout 3 onward: Slow people who occasionally stroke out and spew gibberish, but are otherwise functional if dull.
Fallout 1: Screeching Caveman who doesn't speak English.
Fallout 2: Comes across genuinely like a intellectually disabled person. There's a lot of sympathy from their community and several pretty sad feeling scenes. (Specifically one where they get confused by a computer welcoming system and eventually break down and scream "Me am [NAME]! Me miss MOM! ....Me want go home....")











