|Air date||October 5, 2006|
|Written by||Shinsuke Onishi|
|Directed by||Naoyuki Konno|
Infiltrators (潜入者たち Senyūsha-tachi) is the first episode of the 009-1 anime series.
The episode introduces the cold war setting of the series and the titular character 009-1 aka Mylene Hoffman, as well as three other agents of the Nine Number Group of the Western Bloc. Working together they try to help Eastern Bloc scientist Dr. Soyuz defect to the West.