* CompleteMonster: The titular Doctor naturally who intends to places Pluto's head to the body of a chicken to see if when he lays an egg, the result will be. He's basically like [[TheHumanCentipede Dr Heiter]]in toon version.
* IAmNotShazam: His name is Dr. XXX, not "the Mad Doctor". This isn't helped by the fact that ''VideoGame/EpicMickey'' calls him the latter rather than the former.
** ''VideoGame/MickeyMania'' made this mistake even earlier by having Mickey's voice clip call him the Mad Doctor, though given its context, it could have simply been referring to the short/level itself.
** ''VideoGame/EpicMickey'' goes so far as to have Dr. XXX yell at Mickey to, "Get it right!" during his boss fight.
* NightmareFuel: Easily one of Disney's most chilling shorts, after ''Disney/EducationForDeath'' and ''[[Disney/{{Fantasia}} Night on Bald Mountain]]''.
* VindicatedByHistory: While the short was apparently shunned in its initial release, it has retroactively become one of the most popular MickeyMouse shorts, to where the villain not only reappeared in ''VideoGame/MickeyMania'', but was given a prominent role in both of the ''VideoGame/EpicMickey'' games.
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