Scrooge McDuck Wikia
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Mr Gearloose, or Newton's Father, is a male anthropomorphic cockatoo.

Description

The brother of Gyro Gearloose, this man presumably took a wife at some point prior to the mid-1950's, and, at any rate, became the father of Gyro's whiz nephew Newton.

He may or may not be the same individual as a arrogant chemist bearing an eerie resemblance to Gyro whom Donald Duck met in 1973.

Behind the scenes

The existence of a male sibling of Gyro's is implied by that of Newton Gearloose, who debuted in 1965 in The Copycat Inventor.