The Neon Zombies Alternate Timeline is an alternate timeline of the Arc 3 Universe's original timeline. In this timeline, many events stem in response to the founding of the Umbrella Corporation.
2060[]
- Earliest founding of the Umbrella Corporation.
2120[]
- Rebecca Chambers is born.
2130[]
January[]
3rd[]
- Techno is formed. Tomiko "Vendetta" Hayashi and Isabelle "Siren" Lakewood are appointed as the team's leaders.
2138[]
May[]
- The Umbrella Corporation sends a shipment of chemical weapons to their Paradise Island allies Private Army with the intent of releasing it as a test.
19th[]
- The Private Army's headquarters Bunker 99 is raided by Mirage Security and Techno agents after an undercover agent is discovered.
20th[]
- The chemical weapons sent by Umbrella to the Private Army are seized on a cargo ship in the Neomuna harbour by Mirage Security.
September[]
- Rebecca Chambers enrolls at Midnight City University in Midnight City.
2140[]
- Roxanne Summers joins Techno under the callsign "Rox". She eventually is promoted to the Recon Agent Lead of the team.
- Amber Summers is offered an invitation to Techno by Vendetta and Siren after being recommended to the team by her cousin Rox.
2142[]
- Kell is recruited into Techno as an Outrider Agent, assigned to serve under co-leader Isabelle "Siren" Lakewood.
August[]
- Siren approaches Kell to confirm his unwavering loyalty towards her, which he does.
- Siren informs Kell about the growing tensions between herself and Tomiko Hayashi.
2143[]
March[]
- A failed assassination attempt on Siren escalates tensions and erupts into a civil war between Siren's Loyalists and Techno.
May[]
- Siren meets with John "Private" McKnight and his Private Army at Bunker 99 to discuss a possible alliance.
- Amber Summers, while undercover as a Private Army contractor, assassinates Siren during the proceedings and Techno attacks Bunker 99.
- Echo is killed by Rox during the battle.
June[]
9th[]
- Rebecca Chambers graduates from Midnight City University with a doctorate in biomedical sciences.
December[]
- Ella leads an operation with Private Army contractors to free the incarcerated members of Siren's Loyalists from Nightstone Prison, which would be a success. Delta, Joker, Ketch and Gerlock would be recruited into the Private Army PMC.
2144[]
- The 2144 Zombie Outbreak occurs worldwide, causing many megacorporations to declare state of emergencies as undead forces overrun many territories.
June[]
21st[]
- 501st Council member Scarlet orders Tseng's security team to secure the 501st Corporation's Central Headquarters' lower levels to make way for an incoming 501st Executive Dropship inbound to exfil her from the building.
28th[]
- A team of BlackCell Group operators are dispatched to the Helios Corporation's classified S.A.R. Blacksite to quell an infected incursion. Operators Atom, Io, Arthur and Dokkaebi are chosen by Connor Shaw for the mission.
29th[]
- Techno Agents Danielle Greer, Renee Lynch, Paige Bishop and Samantha Reed are ordered by Tomiko Hayashi to defend Techno Tower from the infected.
30th[]
- Shadow Company PMCs are ordered by Field Commander Philip Graves to defend their headquarters during the Imperial City undead incursion. Captain Dominique "Domino" Tam's team defend the lobby, reception and first floor.
- P.A.R.A.D.O.X. operatives Biggs and Wedge and Techno Agents Amber Summers and Alice retreat to the New Elpis P.A.R.A.D.O.X. Precinct and defend it from the undead hordes.
31st[]
- P.A.R.A.D.O.X. operatives Biggs and Wedge are sent by Melissa Anders to the Neomuni harbor to assist P.A.R.A.D.O.X. and Shadow Company forces. Biggs and Wedge are joined by Requiem and a Shadow Company contractor.
July[]
2nd[]
- Leon S. Kennedy, Godfather of the Kennedy Family, defends the New Elpis Nightclub from the undead hordes as they siege the nightclub, and is joined by club regulars Ada Wong, Claire Redfield and Jill Valentine. While fighting against the hordes, they signal the Atlas Security Service for assistance.
8th[]
- The infected reach Neon City and the 501st Corporation deploys its security forces to defend its streets and sets up a refugee camp in a Corporate District park. An OSF team led by Kyoka Eden are assigned as security.
25th[]
- The Odin Research Laboratories comes under attack by infected and Atlas Sentinel Corps captain Naomi Mizushima is sent with a team to defend the center.
August[]
2nd[]
- Atlas Security Service commander Alain Bourden forms Task Force: Extermination and recruits from many megacorporations to uncover the truth behind the global zombie outbreak and suspects the Umbrella Corporation.
10th[]
- Task Force: Extermination deploys Strike Team Echo consisting of the group's field commander Captain Sergei Ravenov, Doctor Rebecca Chambers, Specialist Sarah Hall and Kleopatros Gavras to investigate a distress signal originating from Tartarus Laboratory, a hidden research facility owned by the Umbrella Corporation.