Skrulls

Skrulls are a race of green-skinned, humanoid shapeshifters from the Andromeda Galaxy. They are a stealthy warrior race, one which may also be the most devious race in the cosmos. Who has carved for themselves the oldest interstellar empire in the universe's history. The Skrulls conquered or colonized every suitable world in the Andromeda Galaxy. Dominating a galaxy with millions of inhabited worlds. The Skrulls are a race who have ravaged a thousand galaxies. In the last 100 years, the Skrulls have waged interstellar warfare with the Kree, Badoon, Dire Wraiths, Brood, Xartans, Majesdanians, Xandarians, the Annihilation Wave, and the Builders. Their attack patterns are mostly accounts of espionage and patience. Living among the race for years, the Skrulls gather intel and plan for years on how to most effectively conquer the planet they infiltrated.