Nosedeenian

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

Appearance
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.

Abilities
Nosedeenians can control electricity and inhabit electrical devices, controlling them from the inside. They grow stronger by absorbing electricity and can multiply if split in half or have enough power.

Nosedeenians are surprisingly strong for their size, as just one was able to lift Max Tennyson into the air by his underwear. Another notable ability of theirs is that the noises they normally use to communicate can, at a certain pitch and volume, shatter glass.

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

Personality
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". Buzzshock solely appears in the original series and Omniverse. Buzzshock was originally unlocked in the Omniverse episode "Max's Monster".

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