Nebula

Nebula is a very prominent corporation in Baccano! originally a mysterious organization, their name and brand have been mentioned many times throughout the story. However, the corporation itself ties closely to the immortal ensemble cast spanning centuries and even has slight ties to another series Durarara!!.

Storyline
They built the transcontinental train the Flying Pussyfoot, on which the events of the 1931 Grand Punk Railroad arc. They also compensated and silenced many of the passengers by paying them off and with Senator Beriam's influence, hid the incident from the world and decomissioned the train after its maiden voyage.

They later are mentioned when several buildings which are ambushed by the Lamia and Larvae factions in 1934 in an explosive conflict, forcing them to ally with the Russo family to quell the escalating violence, granting their Don a means of immortality. Ultimately, they fail in stopping the Homuncli faction and lost their trump card Graham Spector to the opposing faction, resorting to Senator Beriam's influence for help. It is eventually revealed that the head of Nebula is Renee, an immortal and one of the alchemy teachers in the 1700s. Their only successful kidnapping of Frank, a homunclus of Huey Laforet, marked the end of their appearance in 1934.

The company is mentioned in recurring stories at modern times through the series Durarara!! The first act depicts them having bought out Yagiri Pharmaceuticals, headquarters of one of the locals named Namie Yagiri to conduct research on Dulluhan activity among other experiments and manufacturing near indestructible pens that could allegedly stop a tank used by the former's brother Seiji Yagiri. They are also targeting resident supernatural entity Celty Sturluson 's head and eventually succeed in the final volumes of Durarara!! 13. Namie Yagiri is hired to conduct research on the Celty's head after causing a near cataclysmic apocalypse in the city of Ikebukuro and stopped by the the main cast of Durarara. Celty's head is taken to Chicago's headquarters.