Albedo

Albedo is a recurring villain in the Japanese franchise. He is Azmuth's former assistant, who, in his attempt to recreate the Omnitrix, turned himself into an imperfect clone of Ben Tennyson. Since then he has been trying to get back to his Galvan form, while also harboring a great hatred and thirst for revenge for Ben Tennyson. He dies after the final episode of Omniverse events.

Personality
Before he turned against Azmuth, Albedo was an eccentric genius who was very respectful of Azmuth, and was concerned for the safety of others. At the same time, he still showed an arrogant sense of superiority toward others, mostly in terms of intelligence.

In the present day, Albedo is a rude, vengeful and ambitious individual exhibiting sociopathic tendencies. He is unaccepting of Ben's right to wear the Omnitrix, thinking that Ben is just an unworthy human. He bears animosity towards Azmuth, even so much as claiming the credit for the creation of the Omnitrix for himself. Originally being a scientist, he speaks with a larger vocabulary, being more intellectual than Ben, though in a rather cold and condescending manner.

Because he had gained Ben's DNA, Albedo acquired Ben's cravings and habits, which he considers utterly repulsive: He has the same taste in food, scratches himself in inappropriate places, and his left eye twitches whenever he lies. As a running gag of the series, he develops a craving for chili fries, even more than Ben himself, calling it a "human weakness." Originally he had hated this habit, but develops a liking for them, though he denies this and blames it on his human DNA.