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Characters / Gadget Boy & Heather

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Gadget Boy

Voiced by: Don Adams

  • Adorably Precocious Child: He often acts mature and has a large vocabulary even though he's just a child.
  • Ambiguously Human: Thanks to Negative Continuity, it's frequently contradicted whether Gadget Boy is a cyborg or a robot.
  • Badass Adorable: Gadget Boy can be this when he manages to stop Spydra's minions via competence.
  • Catchphrase: "Zowsers-bowsers" and "Knowledge is power".
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  • Idiot Hero: He means well, but he's also extremely gullible and dim-witted.
  • No Name Given: Gadget Boy is all he is ever addressed as.
  • Vague Age: He is implied to be a toddler in the first episode, but the rest of the series suggests that he may be older.

Agent Heather

Voiced by: Tara Strong

  • Deadpan Snarker: In the Adventures in History season, she tends to make dry remarks about the mistakes made by the historical figures she runs into.
  • Hyper-Competent Sidekick: She is the one who saves the day because of Gadget Boy being a dimwit.
  • Only One Name: Her last name is never revealed.



Voiced by: Maurice LaMarche

Chief Strombolli

Voiced by: Maurice LaMarche

  • Butt-Monkey: Even without Gadget Boy unknowingly giving him misery, he just can't go 30 seconds without suffering a misfortune.
  • Comedic Underwear Exposure: A running gag has him losing his pants as the result of an explosion, revealing his underwear.
  • Da Chief: He occasionally loses his patience with Gadget Boy's bumbling.
  • Mr. Exposition: Like Chief Quimby before him, his main role is to explain to Gadget Boy what Spydra is up to.


Myron Dabble

Voiced by: Maurice LaMarche

  • All Love Is Unrequited: He has a crush on Agent Heather, but she is either unaware of his affections or is blatantly annoyed by them.
  • Child Prodigy: He once mentioned that he graduated from college when he was seven years old.
  • Funny Foreigner: Subverted. He at first appears to be a Swiss inventor, but the episode "Back to the Vulture" revealed that he was born in Cleveland and that he talks with a Swiss accent because he moved to the Swiss Alps when he was young.
  • Mad Scientist: He's not exactly insane, but his inventions can be pretty odd.


Voiced by: Louise Vallance

  • Added Alliterative Appeal: She always insults her minions using alliterations.
  • Ambiguously Human: With her six arms and concealed hideous face, one has to wonder what she really is.
  • Bad Boss: She constantly abuses Boris the Vulture and her henchmen Mulch and Hummus. She doesn't even bother to try telling Mulch and Hummus apart in spite of both of them having slight differences in appearance and having completely different voices.
  • Bald of Evil / Bald Women: She is seen maskless from behind in "Gadget Boy and the Great Race", during which she has no hair visible.
  • Big Bad: She's the main villain.
  • Butterface: A particularly extreme example. Her body is very curvaceous, while her unseen face is apparently hideous enough to turn people into stone.
  • Catchphrase: "I'll get you yet, Gadget Boy!"
  • Enfant Terrible: She wasn't any better when she was younger. A flashback in "A Gadget Boy Christmas All Around the World" shows that she was mean to Boris even when they were kids and footage of her when she was a baby shown in "Pirate of the Airwaves" shows her stealing the other babies' bottles.
  • Evil Laugh: She constantly cackles and even does so in the show's opening.
  • The Faceless: Spydra's face is always concealed by a facemask. The reason is because her face is so hideous that seeing it will turn you into stone. Her face is always obscured by foreground objects or a Discretion Shot, but if "Gadget Boy and the Great Race" is anything to go by, she apparently has pale skin and is bald.
  • The Grinch: The Christmas Episode of Adventures in History had her attempt to alter the histories of major Christmas traditions in order to eliminate the holiday entirely.
  • Jerkass: She constantly insults her goons and is rude to every civilian she encounters.
  • Large Ham: She always speaks loudly and dramatically.
  • Multi-Armed and Dangerous: She has six arms.
  • Mysterious Past: Very little is revealed about her origins. Flashbacks to her childhood show her already having six arms, even as a baby.
  • Narcissist: Though her real face is ugly, she believes herself to be very beautiful.
  • No Indoor Voice: She always screams her dialogue.

Boris the Vulture

Voiced by: Maurice LaMarche

  • Butt-Monkey: Is always abused by Spydra.
  • Deadpan Snarker: He sometimes makes remarks about Spydra's nasty attitude and egotistical tendencies.
  • Fur Is Clothing: One episode had him wearing a pair of boxer shorts underneath his feathers.
  • Lame Rhyme Dodge: He frequently insults Spydra behind her back, and tends to say something that vaguely sounds like his insult to cover it up when she glowers at him.
  • Psychopathic Manchild: He is sometimes shown having childish interests, like watching a parody of Barney the Dinosaur.
  • Villainous Glutton: He frequently complains about never getting a decent meal, but when he does eat, he is shown to have a rather voracious appetite, especially in the episode "Boris for President".

Mulch and Hummus

Voiced by: Maurice LaMarche

  • Bald of Evil: Neither of them have any hair.
  • Catchphrase: Hummus frequently says "Next time, I..." whenever he is upset about Mulch having the better disguise/weapon/whatever.
  • Creepy Twins: They're nearly identical, though Hummus has a slightly bigger nose and a larger bottom lip, as well as both twins having notably different voices.
  • Dumb Muscle: They serve as Spydra's brawn and are complete nitwits.
  • No Celebrities Were Harmed: Hummus' voice appears to be based on that of Peter Lorre.
  • Paper-Thin Disguise: They would wear one in almost every episode. In the Adventures in History season, their disguises became more blatantly conspicuous because they had a tendency to wear costumes that were not appropriate for the time and place.
  • Those Two Bad Guys: They're always seen together.
  • Unexplained Recovery: They have been disintegrated to ashes and broken to pieces after being turned to stone, yet they continue to return and assist Spydra in her schemes.

Example of: