She is a light green ball with stubs for arms and legs. The Omnitrix is located on her right cheek.
In Omniverse, she is still a spherical light green, but her body marks are different and she gains arms and legs. Her lips are now more like human lips and her crown turned round.
Powers
Whiplash can use the two tendrils on the top of her head in a Doctor Octopus fashion. She also has a poisonous bite. She has enhanced agility and durability.
Weakness
Her intellegence is low and she isn't that strong.