Kernel Hearts Characters — All Four M.A.H.O.U Units

Kernel Hearts has four playable characters, and every source that discusses the roster agrees on the names: Fernet, Spika, Laika and Dolce. They are the M.A.H.O.U Unit, the squad of magical girls the official store page sends up the Tower of Babel, and the game is pitched around their attempt to dethrone God and save a world drowning in ashes.

The M.A.H.O.U Unit Roster

The Kernel Hearts wiki characters page lists exactly four units under the M.A.H.O.U heading. The official campaign text corroborates the number, calling Kernel Hearts a co-op roguelike action RPG about four magical girls.

Unit	Verified role note	Source
Fernet	Named in the official Steam announcement banner; Gameffine describes her as a Spiritmancer who sips mate between fights	Steam store page and Gameffine review
Spika	Gameffine describes disciplined katana work	Gameffine review, to confirm
Laika	Gameffine describes a massive blade swung aggressively	Gameffine review, to confirm
Dolce	Featured in the official Steam announcement banner	Steam store page

Only Fernet and Dolce have first-party framing at present, and that framing is limited to naming them. Weapon classes, element affinities and stat lines are not published on the official store page, so the role descriptions above rest on a single review and are marked accordingly.

How the Units Differ in Play

Gameffine makes the strongest available case that the four are more than reskins. It argues their personalities bleed into animation, attack rhythm and idle behaviour, and gives concrete examples: Fernet sipping mate between fights, Spika katana work staying clean and disciplined, Laika swinging a massive blade as if she has personal beef with the angels, and Dolce dancing through combat. Those are observational rather than statistical claims, but they are the best available description of how the roster feels.

What the official store page does document about playstyle is the build layer rather than the characters themselves: you mix and match attacks, spells and movement with unique powers during each run, then return to the lab to equip up to 256KB of chips on your Unit MAHOU.OS. That implies the same character can be built differently between runs, so character choice and chip loadout are separate decisions.

Unlocks, Weaknesses and What Is Missing

Two questions dominate character searches, and both are currently unanswered by first-party sources.

• Unlock conditions: the store page does not describe how characters unlock, and the wiki page used here only lists the four units, so any unlock guide is to confirm.
• Weakness chart: a third-party guide site assigns weaknesses such as Fire or Ice to named characters, but that claim comes from an unofficial competitor site with no supporting official documentation, so it should be marked to confirm rather than repeated.

Question	Current status
Full roster names	Confirmed by the wiki characters page and the official four-girl framing
Weapon classes	Partially described in one review, to confirm
Unlock requirements	Not documented yet
Weaknesses and damage types	Not documented by official sources, to confirm

Practical Notes for Choosing a Unit

Because the documented differentiation is feel rather than numbers, the honest advice is to choose by weapon preference and let chips carry the build.

• Pick the unit whose attack rhythm you enjoy, since the documented differences are animation and rhythm rather than published stats.
• Plan chips separately from your pick, because the 256KB MAHOU.OS loadout is the layer the official page actually describes.
• Expect the roster to grow or change. The game shipped on September 17, 2026 and the store page banner already changed once to spotlight Dolce, so re-check official channels after patches.