Darius Angler

"It's perfect. It will kill them all. I'm doing this for you, Billy. They killed you and now I will kill them. All of them. If I add my secret formula to the... no. Don't write that down Darius. The rats could steal this journal and give it to the government. I can't have them ruining my plans. After it happens, then they can listen to my holotapes and read my journals. Then they'll know. Then they'll be sorry."

 was an employee of Grafton Steel and one of the best chemists east of the Mississippi. When Grafton Steel began cutting costs to increase its profit margins, focusing primarily on worker compensation and other worker-related fronts, such as workplace safety budgets and so on, injuries and even deaths started to mount. Darius eventually resigned in disgust, trying to convince his brother, William Angler, to quit as well. However, William relied on the funds from the mill to keep his family fed. It backfired: Cuts in workplace safety resulted in the catwalks deteriorating due to heat from the furnace. They eventually gave out, just as William was passing near a vat of molten steel during mandatory overtime imposed by the company. He was killed on the spot, with nothing left for burial.

Darius swore revenge against Grafton Steel. Grief pushed him to investigate Grafton Steel in depth, uncovering a network of shadowy connections, kickbacks, farcical inspections, and general bribery. Afraid of company surveillance, he moved out to a cabin in the woods. His deteriorating mental state turned into paranoia and he eventually started shooting hikers coming near the cabin. He booby-trapped his cabin and started monitoring the local fox population for GS leanings too.

Eventually, he decided on the means to carry out his revenge. He created a concoction that, when placed in the furnace of the mill, would turn into a toxic white powder that would kill all living things in the valley. He prepared a manifesto to ensure that the public would learn of why he did what he did. The Great War provided the perfect cover. As the air raid sirens blared and bombs dropped, he was contacted by Billy's spirit (or so his grief-broken mind thought) telling him to sneak into the mill and place the formula in the furnaces. He succeeded - and the smoke stacks started spewing toxic dust, turning the entire region into the Toxic Valley.

Appearances
is mentioned only in Fallout 76.