The Skrulls first appeared in Fantastic Four #2 (published Jan 1, 1962) and were created by Stan Lee and Jack Kirby.
This is my take on their Mighty Protectors abilities. They can alter their shape into any object, creature, or person, vary their size and mass up or down, and change their limbs into weapons, like swords or hammers.
Skrull Character Sheet (PDF)
Skrull is a trademark owned by Marvel Entertainment