Fibonacci Sequins (voiced by Ringo Starr who also sings "I Wish I Was a Powerpuff Girl") is a character in The Powerpuff Girls. He is described as Townsville’s most famous flamboyant mathematician and appeared in "The Powerpuff Girls: Dance Pantsed".
His personality is a flamboyant lover of mathematics, saying that "Maths is magical, maths is a mystery, maths a tour de force!".
- His name is a pun on the fibonacci sequence, a series of numbers starting from one or zero, and is named after Leonardo Pisano (Fibonacci), a mathematician who lived from 1170 A.D to 1250 A.D.