Headasteam (Japanese: 暴走マッタナ氏 Bōsō Mattana-shi) is a Boss Yo-kai introduced in Yo-kai Watch 2: Psychic Specters. He is fought in the Hexpress engine room.
Appearances[]
Video games[]
- Yo-kai Watch 2: Boss Yo-kai
Biology[]
Headasteam is a large Yo-kai whose body is mostly composed by his head. Most of his body is covered by gray metal, with two bolts on either side of his face. The only parts not covered are the mouth area and his arms, with his actual skin colored red. He sports four large fangs inside his mouth. He has three eyes: a green eye in his front, and two uneven eyes resembling pressure meters, the left one being larger and more detailed -with scale-like markings rounding it-. He has comparatively shorter and smaller arms with gloved hands. He sports a driver's hat, alluding to his position in the Hexpress.
Headasteam appears to have a very short temper.

Headasteam when calm
He has enough energy to keep the Hexpress running, being connected to the engine system.
After calming down, the dials within his eyes relax and his red skin dulls to a bluish-purple shade.
Profile[]
Yo-kai Watch 2[]
In the Psychic Specters version, during the quest “Getting to Gera Gera”, the player finds the culprit for the broken lever and hands it to him. Headasteam, thinking the player was responsible for breaking the handle, fights the player. After defeating him, he calms down and explains to the player that he is prone to losing his temper.
Attacks[]
One-Two Punch - Punches a Yo-kai twice in succession.
Bumpy Ride - Attacks the front row with the Earth attribute.
Beware Lazy Steam! - Releases steam that inspirits the front row and lowers their Speed.
Beware Hot Steam! - Releases burning steam that inspirits the front row and causes their HP to steadily decrease.
Refueling Power! - Headasteam’s STR increases by a certain amount, depending on how full the red bar is.
Refueling Soul! - Headasteam’s SPR increase by a certain amount, depending on how full the blue bar is.
Time’s Up! Explode! (Soultimate) - Deals large Fire damage to the front row.
Etymology[]
- "Boso Mattana-shi" describes the following: "running wildly; reckless driving; runaway; rampage."
- Headasteam is based on the idiom "a head of steam," which describes a situation in which a person or an activity starts to become very active or successful.
- Chominot comes from "Chaud" (hot) and "Cheminot" (railroader).
- Expresso, combines "Express" and "Estresado" (Stress).
Trivia[]
In other languages[]
Language | Name | Meaning |
---|---|---|
暴走マッタナ氏 Bōsō Mattana-shi | ||
Expresso | ||
Chomino | ||
Vaporix | ||
Stresskessel | ||
Headasteam | ||
폭주요관차 Pokjuyogwancha | ||
Пароглав Paroglav |