Skrulls

At that moment, one of them walked up to Nova and crouched down. "A Xandarian? Nova Corps? You've got your eyes on Earth too?" Nova forced his eyes open and stared at him. But his brain was being suppressed, leaving him unable to do anything but watch. The man in front of him clicked his tongue several times. Then his face began to twist rapidly, quickly transforming into a green-skinned alien with long pointed ears. "Ah, this form is much more comfortable.