parlance said
A reminder that the Powerpuff Girls special with Ringo is on right now on the east coast (7:30pm) on Cartoon Network.parlance
Also, just found this LA Times interview with the director, David Smith on the special. Here's the part about Ringo:
What was it like working with Ringo Starr, who plays a "flamboyant mathematician" named Fibonacci Sequins?
Our jaws dropped. ... We came up with a character design to play the world’s most famous mathematician, we sent it his way and he passed. My heart kind of broke a little bit, but it was a polite ...