you know, at some of fanarts, doujinshi and etc you can see that type of fans/people, who looks like a stereotypical "otaku". i mean, they are glassed, overwieghted, perverted, with a big obsession for anime, manga and games, also they are very unattractive, maybe in some kind of t-shirt with some cute anime girl. i wish i wrote a good appearance of those ones for you to have this characters type pop out in your imaginary. uhhh for example i guess hifumi yamada from danganronpa?.. or maybe you saw those icky fanarts with those characters, so yeah. in my language there is a word scuf, but this word's meaning don't fully describe what i mean there.
tho i know that otaku themselves are just people who likes games, anime and manga, and i may even suggest that i am an otaku myself lol, just wanted to know if there a special term in japanese language for this characters type, cus in english there is nothing :(
thanks for help in any case tho