Warning: all of these fanfics will be edgy. Probably most of them have made me cry. But we don't ge to see much of the Legion in canon, so extrapolating from what we do know is very entertaining.
The Mojave Community Frowns at Your Shenanigans by Bubastisboo - https://archiveofourown.org/works/16485443/chapters/38607119
Okay, I promised you some angst and you got this. Ongoing series of crackficcy oneshots set in the Mojave. So far it's all Legion stuff, so that's the category I'm putting it in. (Warning: shenanigans)
Patere Me Esse Tutum! by JosephFrost - https://m.fanfiction.net/s/9057646/1/Patere-Me-Esse-Tutum
This author just took the two narrative factors that you could use for an Arcade angst fic - both are big spoilers so I can't name them - and just threw 'em together. I've read it like three times and still want to cry. (Warning: random exclamation mark in the title. I don't speak Latin so maybe it makes more sense if you do.)
to watch and wait by madanach - https://archiveofourown.org/works/869673
Legion workplace drama, yo. A brief overview of one of Caesar's war councils. (Warning: Lanius is ugly)
Honesty, Industry, Prudence by meanoldauthor - https://archiveofourown.org/works/7051234
A story of women working from inside the Legion to make the East free. Guest appearances from all your favorite Legion people! (Warning: SO MANY CHARACTERS)
Bereavement by Saerzion - https://m.fanfiction.net/s/10487519/1/Bereavement
A Legion-aligned Courier hates children, and one child in particular. But he can't shake her from his mind. (Warning: harm to children)
YOU ARE READING
Bob's Top 100 Fallout Fanfictions
FanfictionOr, why the Internet was a mistake and Bob needs to visit a psychiatric hospital. But seriously, give these authors some credit.