Skrulls

Skrulls were a technologically advanced race of green-skinned reptilian humanoids from the now destroyed planet Skrullos. They are most notable for their nearly flawless shapeshifting abilities, which enables them to replicate other lifeforms thereby infiltrating any world without suspicion and with impunity. They have been at war for a long time against the Kree Empire who have been responsible for destroying their homeworld when they refused to bow to their authority. Many have become lone wanderers seeking a home away from the genocidal pursuit of the Kree and others that disliked the Skrulls or even sought by those who seek to harvest or enslave them for their shapeshifting. Rumor has it the Skrulls are lead by a queen and she has gathered many of her people to find one day a world to call their own and fight to survive against any race or power that would see their people reduced to ash.