The unnamed pop trio is first seen singing the song My Nemesis ("It's About Time!"), and later performs Perfect Day ("Interview With a Platypus") and My Evil Buddies and Me ("Phineas and Ferb: Mission Marvel").
There are three guys in the band. One has black hair, green glasses, a blue striped shirt, gray pants, and is usually seen playing the guitar. Another one is seen with brown hair, blue glasses, a green shirt, blue jeans, and plays the autoharp. The last one has yellow hair, an orange shirt, jeans, and a belt, and is seen playing a tambourine.
- They may be based on a 1960's group named The Lovin' Spoonful. As evidence of this, the cover to the Lovin' Spoonful album Do You Believe in Magic? shows very similar looking characters and clothing.
- All their songs are in any of the Phineas and Ferb soundtracks (My Nemesis is in "Phineas and Ferb (soundtrack)" Perfect Day is in "Phineas and Ferb: Across the 1st and 2nd Dimensions" and My Evil Buddies and Me is in "Phineas and Ferb: Rockin' and Rollin'")
- They are voiced by Danny Jacob