Galilean

Galileans are bulky planetoid aliens from the planet Keplorr

Appearance
Galileans are bulky, rock armored aliens. They are red in color and have a core on the center of their chest, they have four red fingers and three gray toes. They wear black pants with green stripes on them, they have black marking on their face as well as a big mouth. Their face consists of a large mouth, green eyes, and black markings. In essence, they are considered to be living planets.

Powers and Abilities
Galileans have the ability to manipulate the gravity of other beings and objects, making them either lighter than air or incredibly heavy. They can also manipulate their own gravity, allowing themselves to levitate.

Galileans can make objects revolve around them and can roll up into a planetary sphere.

For all orbiting processes, Galileans can roll up into a planetoid sphere. Because they themselves are living planets, they can survive in the vacuum of space.

Weaknesses
If a Galilean takes a large amount of damage to their core, they could meltdown and explode, much like an actual planet.

Their large size makes fitting in smaller spaces difficult. It is also shown that sudden changes of mass can throw off their orbit.

Omnitrix Transformation
The Omnitrix's Galilean representative is named Gravattack, who first appeared in the Omniverse episode "A Jolt From the Past". Gravattack solely appears in Omniverse.

The Ben Tennyson of Dimension 23 has an equivalent of Gravattack named Orbit Man, who was confirmed to exist in the Omniverse episode "It's a Mad, Mad, Mad Ben World: Part 2".

Gravattack has also been used by Albedo and Bad Ben.