Brainstorm is a Cerebrocrustacean (a play on
cerebrum and
crustacean) from the planet Encephalonus IV (a play on encepha-, a prefix referring to the brain), the previous three Encephalonus planets were all destroyed as the result of primitive Cerebrocrustaceans' attempts to take advantage of the storms surrounding their previous home worlds with poor results. Cerebrocrustaceans are high intelligent
crab-like creatures able to perform several complex calculations and use electric attacks with their pincers or by opening the
exoskeleton plates that cover their exposed brains. They also have the power to levitate; and cause a storm just by thinking. But their intellect makes the Cerebrocrustaceans selfish and eccentric.
As Brainstorm, with the Omnitrix/Ultimatrix symbol in his cephalothorax, Ben speaks with much greater diction and with a British accent. He was first seen in "Pier Pressure", to face Ship, but Brainstorm was an accidental transformation. In Omniverse, Brainstorm has a black and green loin cloth and a black and green stripe in the center of his head. He now speaks with a Scottish accent.
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