A Creator/HannaBarbera series [[FollowTheLeader much like]] their earlier success ''WesternAnimation/ScoobyDooWhereAreYou'', ''The Funky Phantom'' featured three teenagers Skip, April and Augie and their dog, Elmo. While trying to get out of a storm, they entered an old house where the longcase clock was wrong. Upon setting the clock to midnight, they released two ghosts: Jonathan Wellington "Mudsy" Muddlemore, a ghost from UsefulNotes/TheAmericanRevolution, and his cat, Boo. The two of them allegedly hid inside the clock from the British during the Revolutionary War, but then couldn't get out and eventually died inside. Ever since being freed by their new friends, Mudsy and Boo have accompanied them on many mysteries, always giving an invisible helping hand.

The show--Hanna-Barbera's first series with animation farmed out overseas (Air Programs in UsefulNotes/{{Sydney}}, UsefulNotes/{{Australia}})--aired on Creator/{{ABC}} in 1971. The voice of Mudsy, provided by Creator/DawsButler, was identical to his voice work for the character WesternAnimation/{{Snagglepuss}}. Butler went so far as to include Snagglepuss' {{catch phrase}}s, such as [[VerbalTic appending sentences with the word "even"]].
!!This cartoon provides examples of:

* AscendedExtra[=/=]StalkerWithACrush: In the Gold Key comics, Mudsy had one in the form of Revolutionary War belle spirit Priscilla Atwater.
* BeautyBrainsAndBrawn:
** Skip: Brains
** April: Beauty
** Augie: Brawn
* BeachEpisode: "Haunt-In Inn" has a beach scene with the guys in swimsuits and April in a bikini.
** Bonus for {{Fanservice}}, the same episode has April in a nightgown that appears just as short as her usual skirt
* BlondeBrunetteRedhead: April, Skip, and Augie.
* CatchPhrase: Mudsy's "It's Funky Phantom time!"
* ComicBookAdaptation: Eleven issues by Western Publishing Company's Gold Key division (March 1972 - March 1974).
* CoolCar: The Looney Duney and the car they build in the first episode.
* DangerouslyShortSkirt: April's skirt is too short for comfort.
* ExpositoryThemeTune: There were two--one [[DoItYourselfThemeTune performed by the kids]] and another (after three episodes) by some studio performers.
* {{Expy}}: Mudsy is essentially Snagglepuss in the form of a human ghost from the American Revolution.
* FiveManBand:
** TheHero: Mudsy
** {{The Lancer}}s: Skip and Augie.
** TheSmartGuy: Skip
** TheBigGuy: Augie
** TheChick: April
** {{Team Pet}}s: Elmo and Boo.
* HeadlessHorseman
* LoveTriangle: Possibly one of these with Augie, April, and Skip. Augie and Skip fight for April's attention and she seems attracted to them both to a certain extent.
* MagicSkirt: April jumps up and down wearing a pleated cheerleader skirt in "Pigskin Predicament", and it does not flip up.
* OriginsEpisode: One episode features a flashback to show how Mudsy and Boo ended up in the clock.
* OurGhostsAreDifferent
* PunnyName: Henry Fowler, who runs Chicken Delicious, and Mr. Angus, who owns an angus and roast beef chain.
* ScoobyDooHoax
** Averted in a few episodes, one of which had mundane thieves and another had a gimmick supervillain more in line with something out of ''WesternAnimation/DynomuttDogWonder''.
* ScoobyStack
* TheSmurfettePrinciple: April is the only girl in the group.
* TeamPet: Elmo and Boo.
* TitleScream
* TwinSwitch: The Hairy Scary Houndman dognaps Elmo instead of the prize winning dog.