The A.o.A. is the villainous organization of Digimon World 3. They are a cyber-terrorist group, responsible for many attacks on the network, using Digimon as tools for their evil deeds.
The MAGAMI Corporation, host of Digimon Online, was a cover for A.o.A., with the high staff being the masterminds behind A.o.A.'s actions. Their plan was to create an artificial Digimon capable of fusing with machinery, which would aid them in their plans of world domination. A hacker known as Lucky Mouse discovers their plan and intervenes, stealing the digitama of the Digimon they created and erecting a firewall between the Asuka and Amaterasu servers, which makes Bulbmon the transportation Digimon used by A.o.A., unable to transfer A.o.A.'s troops through the servers and making the Digimon to go berserk. A.o.A. had taken over Amaterasu server, turning all tamers there into Oinkmon after they had forcefully raised Digimon for them.
The Oinkmon served as a source of matrix data to create Vemmon, the Digimon they had created. They successfully fuse Vemmon with the Juggernaut Battleship in the real world, making it digivolve into Destromon. Junior, one of the players of Digimon Online, thwarts their plan and neutralizes Destromon before it is able to attack a city, but learns later on that Destromon was just a decoy for their true plan.
- Lord Megadeath: The mastermind behind A.o.A., he only used the organization as a means to fulfill his plans of creating Snatchmon and rule the world. He is the tamer of Fujinmon, Suijinmon and Raijinmon;
- MAGAMI President: The president of MAGAMI and head of A.o.A., also being the one responsible for all of A.o.A.'s actions. He is the tamer of Raidenmon;
- Game Master: She was the administrator of the Asuka server, controlling A.o.A.'s operations in that server. She is the tamer of Persiamon.