Happy Birthday, Doofus Drake is the eighteenth episode of Season 2 of DuckTales 2017, written by Bob Snow (along with DuckTales 2017's normal team of writers) and directed by Matthew Humphreys. It features the 2017 Continuum characters of Louie Duck, Goldie O'Gilt, Doofus Drake (alongside his mother and father and the unavoidable portrait of Gummeemama Frances), Mark Beaks, Flintheart Glomgold, the Beagle Boys, Della Duck, Scrooge McDuck, Randy Empire, Huey Duck and Launchpad McQuack. B.O.Y.D., Percival P. Peppington and the fictional Sharkbomb Glomgold make their debuts, while Webby Vanderquack, Lena De Spell, Violet Sabrewing, Dewey Duck and Bentina Beakley make brief, wordless cameos.
Goldie O'Gilt agrees to become Louie Duck's mentor in all things underhanded, but only if he'll use his supposed friendship with psychopathic rich kid Doofus Drake to get her into his select birthday party — and get her hands on a significant part of the Drake treasury which Doofus has decided to give away to his guests… but only if they're good and obedient. Can the unlikely duo keep up their charade even though all the other guests at Drake's party are also con artists?
- Goldie O'Gilt keeps a picture of a Klondike-era Scrooge McDuck in her wallet at all times, and, by the end of the episode, adds a picture of Louie.
- Louie getting Goldie O'Gilt to be his mentor follows through on the ending twist of the earlier episode The Outlaw Scrooge McDuck (2019).
- Louie is still traumatized by his last attempt to worm himself into one of Doofus Drake's parties, in Day of the Only Child (2018). The episode ends up changing the status quo introduced by that episode, as Doofus's parents finally rebel against him.