Power Pack

The Power Pack is a fictional superhero team appearing in Marvel Comics.

Origin
When the Power siblings (Alex, Julie, Jack and Katie) found their parents were kidnapped by aliens, a good alien named Whitey gave the children his powers so they could save the day. After doing so, they decided to continue using their powers as the superhero team the Power Pack.

Members

 * Alex Power / Zero-G - The leader of Power Pack and the eldest of the siblings, who can manipulate anti-gravitational fields which can cancel gravity.
 * Julie Power / Lightspeed - A member of Power Pack and second eldest of the siblings, with superhuman strength and the ability to fly at the speed of sound while also creating a stream of refracted light like a rainbow as well as hover in the air.
 * Jack Power / Mass Master - A member of Power Pack and second youngest of the siblings, who is a thrill-seeker and has the power to control his body's density molecules at will.
 * Katie Power / Energizer - The youngest of Power Pack and the siblings, who can shoot power beams of energy from her body.

Iago PUC's ideas

 * A version of the Pack appears in Ultimate Marvel: Earth-2. In the storyline, they are called the Omega Pack, and are children of Bruce Banner / Hulk and Betty Lockwood / Scarlet Witch.
 * The Pack appears in Comic Con Incorporated. They are roomers in the fictional titular hotel, and are on the care of Autobot scout Bumblebee.
 * The Power Pack appears in the second season of Iago PUC's version of Marvel's Spider-Man, with Alex voiced by Colleen Villard, Julie voiced by Tara Strong, Jack voiced by Kate Higgins, and Katie voiced by Michelle Ruff.