Mr. O'Malley was a character in the comic strip Barnaby, by cartoonist Crockett Johnson.
He was a 3-foot-high (0.91 m), cigar smoking man with an overcoat and four tiny pink wings, and was a member of the Elves, Leprechauns, Gnomes, and Little Men's Chowder & Marching Society.
Mr. O'Malley's conceit was matched only by his inability to grant the simplest childhood request, and his misguided attempts never failed to get Barnaby into hot water.
"Cushlamochree" (from the Irish cuisle mo chroí, "beat of my heart") was his signature cry when shocked by the inevitable down-turn of events in response to his ineffectual meddling in Barnaby's affairs.
[2][3] The play was later adapted into a 1959 episode of General Electric Theater, starring Bert Lahr as O'Malley.