<Tr> <Td> </Td> <Td> This article describes a work or element of fiction in a primarily in - universe style . Please help rewrite it to explain the fiction more clearly and provide non-fictional perspective . (March 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> The following is a character list of main and secondary characters on the Disney Channel series Phineas and Ferb . </P> <P> Phineas Flynn (voiced by Vincent Martella) Like other characters, he has red hair . His age is not mentioned . Phineas, along with his stepbrother Ferb Fletcher, star in the A-Plot of every episode . The series concerns Phineas's attempts to avoid boredom by finding something new to do every day of the summer vacation . He does this with his less - talkative stepbrother Ferb, and often with many other neighborhood children . He is known to be very selfless and energetic . Phineas has many catch phrases like "Oh, there you are, Perry" or "Hey, Ferb! I know what we're going to do today!" and "Hey, where's Perry?". </P> <P> Phineas comes from a blended family . The creators chose this arrangement because they considered it underused in children's programming as well as from Marsh's experiences in one . As a character, Phineas has received a positive critical response, with one reviewer describing him and his brother as a "comical pairing ." Phineas appears in Phineas and Ferb merchandise, including plush toys, t - shirts, and a video game . </P>

Who does the voice of phineas on phineas and ferb