Super Skrull, born Kl'rt, is a member of the Skrull race and a villain of the Fantastic Four. Super Skrull is extremely loyal to the crown of the Skrull Empire. He sees himself as a hero of his world, as do many Skrull citizens. Despite his faith for the crown, he has a sense of honor which sometimes leads him to side with the heroes of Earth, even against his own brethren. An example of this is when he solved a conflict between the Skrull and their enemies the Kree, who were fighting over possession of the half-Skrull, half-Kree Young Avenger Hulking. He shape-shifted into Hulking and said he will spend a year with each group and then make a decision, thus deceiving his own Empire. He also showed his more heroic side during the second Kree-Skrull War when he came to the defense of Zenn-La, homeworld of the Silver Surfer when it came under siege by the Kree.
The Super Skrull, while not using any of his Fantastic four powers, has the appearance of an average Skrull. He has green skin, red eyes, pointy ears, and a rough, bumpy chin. He wears the uniform of any Skrull soldier, a purple body suit with the color black covering most of the upper body that extends to shoulder pads and what resembles underwear on the outside of his suit. It also involves a strange, hood-like attachment on the top of his head. He also wears black boots and gloves.
As a Skrull, he can alter his appearance at will, so his appearance is not constant. While using his Fantastic Four powers, it changes him as well. Mister Fantastic's power causes his appendages to stretch, extending his body. While accessing the powers of the thing, any part of his body, usually the arms, take on an orange, rocky exterior. The Human Torch's powers simply light him ablaze, while the Invisible Woman's powers make it hard to see his appearance at all, since he becomes invisible.