Brainstorm is the Omnitrix's DNA sample of a Cerebrocrustacean from the planet Encephalonus IV.
Brainstorm has a light orange crab-like appearance with pincers for hands. He can open his skull plates at will to reveal his huge brain, which is purple in color.
His eyes are red and he retains his six legs, and he also has larger pincers. His mouth has the shape of a real crab "moth", and he wears a green belt with the Omnitrix symbol located on it and he wears black trunks.
Brainstorm usually speaks with very high vocabulary, which can make it difficult for others to understand what he is talking about. Brainstorm speaks with a British accent.
Powers and Abilities
Brainstorm's cranium holds an immense brain, giving him super-massive intelligence. He can solve very difficult calculations mentally in roughly seconds, and knows and can visualize equations and movement of objects as if they're actually there. He can even determine mechanical values and physical properties by simply looking at them.
With his intellect, Brainstorm can perfectly understand the mindsets and mannerisms of his enemies, and any useful objects around him, so he can know exactly what moves to make to take down his enemies. His IQ is shown to be 10^30, or one nonillion.
Brainstorm can produce and manipulate electricity in a variety of ways, such as electrocuting or launching enemies and disabling or destroying machinery, by opening the exoskeleton plates on his skull. He can also charge up his electrical energy to produce a concentrated beam of electricity strong enough to blast Ship out of the air.
Brainstorm can create electric field waves from his brain to block attacks and knock away enemies and generate protective force fields powerful enough to topple an Evolved Arburian Pelarota. He can use his electrokinesis to telekinetically move objects, size and mass ranging from trains to living beings without damaging or hurting them. He can also generate and fire electricity from his pincers as well as his brain and can control machinery and other technology using electrokinesis, giving him a form of technokinesis.
Brainstorm is strong enough to pin opponents against walls using his pincers and rip an Arachnichimp's webs off his face. He is very durable thanks to his shell, and he seems to have enhanced dexterity, as he can use a golf club very easily despite having pincers. Brainstorm is also very agile and can perform acrobatics such as somersaults and forward rolls.
Brainstorm can scale walls and walk on an Arachnichimp's webs, as well as levitate several stories above the ground. Brainstorm possesses mnemokinesis, which he can use to alter and erase other beings' memories and thoughts by manipulating their brain pulsations.
Brainstorm uses his mouth protection to hold his breath underwater.
The sonic screams of a Sonorosian can give Brainstorm a headache and make it hard for him to concentrate, suggesting that concentration is required for him to use his powers.
Brainstorm tends to be rather arrogant and egotistical, which can make him forget to do simple things, as shown when he was too busy trying to convince an escaped Spidermonkey to return to the Omnitrix before he was reminded by Gwen to reabsorb him.
If Brainstorm's shell is closed when releasing electricity, it will shock and injure his brain. He can also be shorted out due to the electricity in his brain.
Being a Cerebrocrustacean, Brainstorm is vulnerable to his natural predator, the Vicetopus.