Phineas Flynn (voiced by Vincent Martella) Like other characters, 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,[1] 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?".
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.[2] As a character, Phineas has received a positive critical response, with one reviewer describing him and his brother as a "comical pairing."[3] Phineas appears in Phineas and Ferb merchandise, including plush toys,[4] t-shirts,[5] and a video game.[6]