Squadron Supreme, Quasar, Project Pegasus, Blue Shield.
History
After a millenia of war with the Kree, the Skrulls developed a program to endow their soldiers with ablities and powers to defeat their enemy. But before the "Super-Skrull" program could get beyond the testing phase, the Skrull homeworld was destroyed by the Devourer of Worlds. A few Skrulls were believed to be alive and Sk'ym'x began to search for them.
His search brought him to Earth due to the numerous reports of U.F.O.s and alien sightings. His starship was nearly destroyed entering the Milky Way and he was rescued by astronaut Joe Ledger. Grateful for his rescue, Sk'ym'x gave Ledger the Power Prism (a weapon of great power) and the two returned to Earth. After searching Earth and not encountering any fellow Skrulls, Sk'ym'x resigned from the Squadron Supreme and alledgedly left Earth. But, in fact, Sk'ym'x never left his newly-adopted home, he remained on Earth as a "Watcher".