Before working on The Love Boat, Fred Grandy starred in this show as Walt, the night watchman at a wax museum. He gave life to the statues of Count Dracula, Frankenstein's Monster and the Wolf Man, enabling them to fight crime.
Not to be confused with the movie The Monster Squad.
Tropes featured include:
- And I Must Scream: In "Ultra Witch", the titular villain used a ray gun to transform Dracula, Frank N. Stein and Bruce W. Wolf into cardboard cutouts that couldn't move or speak, but were still conscious.
- Antagonist Title: Every episode's title was also the name of the episode's villain.
- Birthday Episode: "The Skull" has our heroes celebrate Frank N. Stein's birthday.
- The Blank: The eponymous villain of the episode "No Face" lived up to his name, as he had no face of his own without the makeup he used to impersonate Chief Runny Nose and the mayor.
- Literally Shattered Lives: The Weatherman ends up freezing Bruce W. Wolf solid and threatens to shatter him to pieces. Thankfully, Bruce is thawed out before the villain gets the chance.
- Mission Control: Walt's role is to stay behind and keep radio contact with the Monster Squad, though he usually leaves mission control to join the monster heroes in the climactic battle.
- Monster Mash: The premise of the series is that three wax figures based on Count Dracula, Frankenstein's monster and the Wolfman have come to life and become crimefighters.
- Monster of the Week: Every episode has our heroes fight a different supervillain.
- Mummy: The plan of the titular villain of "The Skull" involved reviving a mummy to use as his minion.
- Objectshifting: The episode "Ultra Witch" had the titular villain use a ray gun to transform Dracula, Frank N. Stein and Bruce W. Wolf into cardboard cutouts. Worse still, the victims are still able to feel and think, but can't move. After Walt turns the monsters back to normal, Ultra Witch tries to use the weapon on him, only for a mirror to reflect the beam back at her and turn her into a cardboard cutout instead.
- Tickle Torture: "The Tickler" has the titular villain use giant feathers in an attempt to tickle our heroes to their doom. It's as silly as it sounds.
- Villainous Glutton: In the episode "The Ringmaster", one of the titular villain's minions was an obese woman named Bonnie Bon who was constantly devouring junk food.