Kree

The Kree are a scientifically and technologically advanced militaristic alien race native to the planet Hala.

History
The Kree are a humanoid race who follow a strict, militaristic lifestyle.

Kree are one of the many races encountered by the Asgardians in the Nine Realms and the worlds beyond Yggdrasil.

Phil Coulson asked Lady Sif which of the many alien species she had previously encountered was blue. Kree was one of the races she mentioned, but she added that the Kree have never been on Earth.

War Against Xandar
In recent times, the Kree have been at war against the population of the Xandar. In a drastic move, Ronan, a high-ranking member of the Kree military, allied with Thanos, promising to give him the Orb in exchange for the forces necessary to annihilate Xandar.

Characteristic Traits
The Kree are a humanoid species and resemble the human race almost exactly, with the exception of having blue skin. They have a higher strength level than that of a human, and their bodies are different having adapted to various environmental characteristics on their home planet.

Notable Kree

 * Ronan the Accuser