Calamitous often doesn't finish anything, not limited to his inventions, or sentences. He is a bald, tiny, near-sighted, eccentric, but very forgetful old genius, who is one of the most brilliant evil minds on the planet, and he would be more dangerous if he didn't have the bad habit of never finishing what he starts. He is Sinister, dastardly, mysterious, cunning, and greedy. He has an adult daughter, named Beautiful Gorgeous, who didn't want to live a life of evil. Jimmy Neutron is his rival.