Nosedeenian

Nosedeenians, colloquially known as Megawhatts, are mischievous anthropomorphic battery-like aliens compased of an electrical energy from the planet Nosedeen Quasar.

Anatomy
Nosedeenians are black with plus and minus symbols on their back and a lightning bolt on their chest. They stand roughly a foot tall, have pointy legs, and have three fingers on each hand. Their language mostly consists of high-pitched squeaking and chirping noises, but they are capable of speaking English.

Nosedeenians come in different colors such as yellow, white, green, and mint green.

Powers/Abilities
Nosedeenians can control electricity and inhabit electrical devices, controlling them from the inside. They grow stronger by absorbing electricity.

Nosedeenians can multiply in one of two ways: either they split in half or they obtain enough power.

Nosedeenians are surprisingly strong, agile, and durable for their size.

Nosedeenians can fly seamlessly in the air and leave an electric trail while doing so.

The noises that Nosedeenians normally use to communicate can shatter glass when at a certain pitch and volume.

Weaknesses
Being made from electrical energy, Nosedeenians are weak against water and other resources that ground it.

Nosedeenians are powerless against insulators or entities capable of absorbing their electricity, such as a Conductoid.

Nosedeenians have a limit to how durable they can be before being knocked out by enemy attacks.

Behavior
Nosedeenians exist to have "fun", which in their case is to cause trouble wherever they go. While they cause a lot of damage, they do not seem to be hostile, and only openly attack when provoked.

Omnitrix Transformation
The Omnitrix's Nosedeenian representative is named Buzzshock, who first appeared in the original series episode "Ben 10,000". He was originally unlocked in the Omniverse episode "Max's Monster". Buzzshock solely appears in the original series and Omniverse.

Heatblast has also been used by Ben 10,000, Ken 10, and Bad Ben.