Mission Deep Freeze is an Alpha Team subtheme, that ran from 2004-2005. The theme centers around a team of secret agents known as the Alpha Team, and their efforts to stop the nefarious villain Ogel from taking over the world. In 2004 LEGO completely revised Alpha Team. The theme's logo was changed, many of the characters had different appearances than in previous years and some characetrs such as Cam and Crunch were removed and replaced with Agents Arrow and Diamond Tooth. Alpha Team vehicles were given a new feature, known as Alpha Mode, which allowed them to be transformed into another vehicle without disassembling them. In addition, The Alpha Team vehicles' color scheme were completley changed, featuring black, grays, white, and sand blue, as well as various transparent colors for smaller details.
In 2005 the thme came to an end with release of two sets, set 4770 Blizzard Blaster and 4774 Scorpion Orb Launcher. The theme's story concluded with the main vehicles of the sets facing off, and left the outcome of the fight to the imagination. LEGO never revealed whether Ogel or Zed won the final battle, although it is widely accepted that Zed was victorious.