Launchpad might not be the very smartest of ducks, but he can be a hero when he needs to. He is also very kind and gentle, and acts as sort of a big brother to the Junior Woodchucks in general, and Doofus in particular. Doofus looks up to Launchpad considers him a great pilot and a real hero.
He is mostly upbeat and optimistic, but he can get his feelings hurt, like in the episode "Armstrong", when the robot seemingly replaces him. Launchpad is also typically calm, brave and heroic, and somewhat of a ladies man. He is also very patient and humble, rarely getting upset, even when Scrooge scolds/insults him, although this could partly be because he is somewhat dimwitted.
Launchpad's first appearance was in "Three Ducks of the Condor", where he is hired by Gyro and Scrooge to fly the latter to the Land of the Golden Suns in Gyro's newest helicopter, The Condor. He appears throughout the series, mainly when Scrooge needs a pilot to fly him somewhere.
According to the episode "Launchpad's First Crash", Launchpad built his first plane, the Sunchaser, by himself, and he was hired by Scrooge as a youngster to fly to the Thick-of-It Rain Forest to help him locate the Lost City of Diamonds. At that point, Launchpad had a rate: 10 cents per mile, but he lowered it to a penny per mile to suit Scrooge. Since that adventure, Launchpad and Scrooge became an inseparable team.
In the episode "Top Duck", Launchpad is reunited with his family, a group of stunt performers called The Flying McQuacks. Having spent his adult life feeling like a disappointment to them, and most notably his father Ripcord, Launchpad finally realizes how much they love him.
Launchpad McQuack was a regularly meetable character in the time when DuckTales, and later Darkwing Duck, were originally airing. In 1991 he starred in the "The Disney Afternoon Live!: Plane Crazy" stage show that ran at Disneyland as part of Disney Afternoon Avenue, and he has also appeared in the Disneyland version of the Fantasmic! finale.