Phineas Flynn is a minor character in Powerpuff Girls Doujinshi.
- Origin: Phineas and Ferb
- Gender: Male
- Nationality: American
- Status: Alive
- Family: Ferb,Lawrence Fletcher (Father),Linda Flynn-Fletcher (Mother),Candace Flynn (Sister)
- Friends: Isabella (Love-interest),Bhaljeet,Buford,Perry (Pet)
Phineas is 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, and often with many other neighborhood children. He is known to be very selfless and energetic.