Calvin Fort

Calvin Fort (voiced by Frankie Muniz) is seventeen-year old boy is one recurring character in Phineas and Ferb He first appeared  in the  The Return of Rollercoaster. He is recurring male character of TV Show Trivia

He is voice is provided by Frankie Muniz, the Malcom of Malcom on the Middle and Agent Banks

your main nemesis is Bufford ,sometimes he and Bufford are friends