Character from the song "Dear Mr. Fantasy" by group Traffic, released on their 1967 album Mr. Fantasy.
Dear Mister Fantasy play us a tune
Something to make us all happy
He's a Pagliacci-type figure:
You are the one who can make us all laugh
But doing that you break out in tears
Traffic member Jim Capaldi had "...drawn this character playing a guitar, with puppet hands instead of his own hands." Under it, Capaldi had written "Dear Mr. Fantasy, play us a tune, something to make us all happy," as though someone was writing a letter to the character.
Capaldi later woke up from a nap and "...found that they'd written a song around the words and drawing I'd done."