Blue Gender (ブルージェンダー Buru Jenda) is a 26-episode anime created by Ryousuke Takahashi (of Armored Trooper Votoms and Gasaraki fame) broadcast in Japan from 1999-2000.

It is the story of Yuji Kaido, an average guy who was diagnosed with a serious disease in the near future and was put into cryogenic stasis. When he wakes up, he discovers that a race of insectoid beings called "Blue" have overrun the Earth and that he may very well be the key to the survival of the human race.

Yuji's years of hibernation are finally ended when a group of soldiers from an orbiting space colony called 2nd Earth are ordered to recover "sleepers" around the Earth. Among them, the soldier Marlene Angel develops a strong bond with Yuji over time. As Yuji and the soldiers try to escape earth, Yuji meets many of the Humans still left on Earth. The blue eventually kill all the soldiers except for Marlene, who is devoted to her duty to get Yuji to second Earth. Along the way Yuji and Marlene become closer. Eventually Yuji and Marlene reach a ship in Russia and leave to 2nd earth. Yuji is injured on the ship by a blue that was on board. Marlene and Yuji are separated, and Marlene is sent back into training. She rebels and is bent on finding Yuji. When she does she finds that he is being trained for a new Armor Strike that is much stronger than the originals. On 2nd earth scientists reveal the nature of the illness that put Yuji in stasis and the source of the insect monsters called the Blue is the same. The Earth, in an effort to curb rising population, activated dormant B cells in the human bodies which in turn led to the creation of the first Blue.

The show draws heavy influences from many different science fiction sources, the most prevalent is Starship Troopers, with enemies that look like bugs and the resistance riding in Exoskeleton-like mechas.

Blue Gender was created by the Japanese animation studio, AIC and is distributed in the United States by FUNimation. In 2003, Blue Gender was released on American television as part of Cartoon Network's Adult Swim (albeit edited to remove its graphic violence and sexual content). There is also a compilation movie (Blue Gender: The Warrior) available on DVD. The series was also shown on the Sci-Fi Channel in the UK in 2002-2003.

From Wikipedia