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Medusa (Japanese: メドゥーサ Medūsa) is an Onryo who is the main antagonist of M06, responsible for one of the Seven Academy Mysteries. She has two additional forms, who are named Togurosu (Japanese: トグロス Togurosu) and Onryo no Tamago (Japanese: 怨霊のタマゴ Onryou no Tamago).
In Yo-kai Watch: Wibble Wobble, she is a Rank S Yo-kai of the Slippery tribe.
Appearances
Video games
- Y School Heroes: Bustlin' School Life: Boss and helper Onryo
- Yo-kai Watch: Wibble Wobble: Playable Yo-kai
- Yo-kai Sangokushi: Kunitori Wars: Playable Yo-kai
- Yo-kai Watch World: Playable Yo-kai
Anime series
- Y School Heroes Movie: Antagonist Onryo
Biology
Medusa is a very slender Onryo. Red snakes form her hair (like her Greek namesake) and four make up her arms. The snakes that form her hair make a heart-like shape. She has a small green head, half of which is hidden by snakes, and a skeletal body. Her shoulders have three spikes on them. There are two small arms extending from her rib-cage. She lacks a pelvic bone and is levitating over her lower body, which consists of her legs and a wing-like dress.
Her secondary form, Togorosu takes the shape of a dark-gray and green-spotted piece of poop (yet still retains a rolled-up cobra body if look closely to her 3D model) , with snakes lurking out of it and and on the top. She also has red eyes with purple eyelids, yellow pupils and eyelashes and big lips with red lipstick on it.
In her third and final form called Onryo no Tamago, which is shaped like a egg with legs and scythe-like hands. She has a light-grey body with red stripes and black and white eyes on each, with a mouth that is always open along with a white tongue inside.
Medusa has several reptile-like minions that work for her, which are the students that were turned into Hebimaju. She also has the abilities to turn into two other forms, Togurosu and Onryo no Tamago.
Profile

Y School Heroes: Bustlin' School Life
Medusa appears as boss in the story, playing a similar role as she does in the anime. Medusa can be fought again in the residential area of the academy. Togurosu can be fought again outside the academy building. Onryo no Tamago can be fought in the academy building.
Yo-kai Watch: Wibble Wobble
Game data
Yo-kai Watch: Wibble Wobble
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Quotes

In the anime
Y School Heroes Movie
Etymology
Onryo no Tamago translates to Onryo egg or vengeful spirit egg.
Origin
She is based on the Gorgon of the same name, who was in love with Poseidon. Medusa was once a beautiful lady but became her hideous form after she and Poseidon made love in the virgin goddess Athena's temple, forcing the goddess to change her into a gorgon, and help Perseus slay her.
Trivia
- In the movie, Onryo no Tamago has scythe-like-hands but in Bustlin' School Life, she only has hands with three fingers.
- In an interview with the film's voice actors during its premiere, Onryo no Tamago was created as a last-minute addition to the film, because the voice acting for the film ended earlier than expected. It had been proven to be challenge for Kimura herself to record in two different voice styles.[1]
- Togurosu has the most variants out of all movie main antagonists, with a total of 3.
- Medusa has the most variants in Bustlin' School Life if all her forms are combined, with six variants.
Related Onryo
- Gorgon
- Big Ben
- Makisogu
- Hedoross
- Guretamago
- Ja Pídàn