Stardust is a villain from the Marvel comics, She is one of Galactus' Heralds and manifests its Cosmic
Power via control of Water.

The Avengers Earth's Mightiest Heroes

Stardust oversaw the construction of a device in the mountains that would help Galactus consume the Earth.

Stardust as she appears in The Avengers Earth's Mightiest Heroes

She ended up fighting a team of superheroes consisting of Human Torch, Wasp, Wolverine, Thing and Hawkeye. She was destroyed by the combined attacks of Human Torch, who weakened her with a high blast of fire, and Wasp, who crossed through her body and finished her off and her tower was destroyed by Hawkeye with three explosive arrows.
Stardust SHS

Stardust in The Super Hero Squad