Gyro Gearloose is a Disney comics character.
He is Duckburg's wacky inventor. He's a gentle, passive soul who tries to invent things to make the world a better place. Nearly everyone from Mickey Mouse to Grandma Duck have sought Gyro's skills for one purpose or another, however, Gyro's inventions don't always maintain their created integrity, often becoming quite a disaster in the end. Though often under the exclusive employ of Scrooge McDuck, Gyro is also a secret agent for the D.I.A. (Duckburg Intelligence Agency, which, ostensibly is a division of S.H.U.S.H.), under the secret name of "Dr. G.," where his skills are put to use for the government, especially against Dr. Nogood and the agents of F.O.W.L. (Foreign Organization for World Larceny). His role in S.H.U.S.H. seems to have been supplanted by Dr. Sara Bellum (also a chicken) in the series DarkWing Duck.
Gyro's arch-nemesis is the evil inventor Emil Eagle, though he is also menaced by others such as the Beagle Boys and Magica De Spell. Gyro seems to have had some trouble maintaining his weight in his early days, where he occasionally appeared quite hefty at times, but his primary aspect is slender. Gyro has several peculiar methods for clearing his mind and jolting to creative inspiration. One common method is to hop, upside down on his helmet which has a pogo-stick attached, and another is to strike himself in the head with at sledge hammer. Gyro's protege and nephew, Newton, often visits his workshop, and his creation called Little Helper (a.k.a. Li'l Bulb) can often be seen somewhere in Gyro's general vicinity doing something silly. A crane or long-beaked woman with a pony-tail hair-style named Matilda has appeared as Gyro's girlfriend and as a friend of Daisy Duck's in at least two stories (in Walt Disney Comics and Stories 310 in "Gyro Gearloose: The Real Cool Canoe" and Dell's FC "Daisy Duck's Diary" #948).