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Characters / Cave Story

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Main Characters


The Player Character. An amnesiac young man who awakes in a small cave in the depths of a strange island. He eventually discovers that he's really a scout robot from the surface.


    Curly Brace 

Mimiga Ally

A mysterious young woman who seems to know a bit about our hero.

    Sue Sakamoto 

Looks up to her brother
Click here to see spoilers 
A fiery young girl being pursued by the Doctor's henchmen.


The Leader
The leader of the Mimiga village and Toroko's brother-figure.


Misery's punching bag
Click here to see his whole body 
An anthropomorphic bar of soap under the command of the Doctor.


The Doctor's servant
A young looking witch under the command of the Doctor.

    The Doctor 

The power-snatching betrayer
The cruel tyrant of the island. Formerly the research group's medic, he discovered the Demon Crown and went mad with power.

Important Characters

A Mimiga warrior, and Toroko's brother. He was killed by the Doctor.


Nice and Courageous
Click here to see her original design 
A young Mimiga and Sue's friend.

    Kazuma Sakamoto 

Sometimes reliable brother
Sue's older brother.
  • Butt-Monkey: He is mostly seen trapped in a warehouse whining, and his younger sister Sue beats the crap out of him often.
  • Dirty Coward: Of all the characters, Kazuma is the most cowardly. At the beginning of the game, he's begging for help from his little sister, who is in actual danger. Near the endgame, he decides to abandon the island, leaving behind his sister and the rest of his companions. Accepting his offer to go with him leads to the game's worst ending.
  • Distressed Dude: He's first met locked up inside a shelter, calling his little sister for help.
  • Eyes Always Shut: His eyes are always closed in both in his overworld sprite and portrait.
  • Hollywood Hacking: He's the one who finds the correct password to hatch a Sky Dragon egg.
  • Non-Action Guy: To extreme levels. He make no effort to fight at all, and demonstrates that he is the most cowardly person on the expedition by far.
  • Pointless Band-Aid: Has one on his left cheek. It may not be pointless - he probably got it from Sue.
  • You Gotta Have Blue Hair: Like all the Sakamoto family, he has green hair.


Keeper of the Sand Zone
An old lady who lives in the Sand Zone. She has five lost puppies, and requests that the hero find them for her.
  • All-Powerful Bystander: She's just as powerful as Ballos and could have killed him when he lost his mind, ending the drama before it began... but she couldn't bring herself to kill him.
  • Chekhov's Gunman: She is Ballos' sister, and the one who sealed him away after he went out of control. She is also Misery's mother.
  • Miniature Senior Citizens: She's the same height as the hero, who's half the height of most humans.
  • Retired Badass: Again, she sealed Ballos after he went insane. That must have required really strong magic.


The Mimiga-like coward engineer
A cowardly engineer who was transformed into a Mimiga.
  • Baleful Polymorph: He's a human who was transformed into a Mimiga by Misery.
  • Cowardly Lion: He eventually overcomes his fear to help Momorin construct the escape rocket.
  • Mr. Fixit: He's an engineer.

    Professor Booster 

Sue's grandfather figure
The former research party's technician.

    Momorin Sakamoto 

Sue's mom
The mother of Sue and Kazuma.
  • Badass Normal: She survives being thrown off the island by the Doctor. Then, after climing back up, she personally organizes the resistance against him.
  • Deadpan Snarker: Momorin's commentary on the Doctor trying to throw her off the island once she's done her job for him is to dryly retort about how "chivalry is dead, let me tell you,"note  Sue definitely got a bit of her attitude from Momorin.
  • Mama Wolf: Not that she could personally do anything about it herself, but Momorin does take particular offense to the Doctor taking Sue with intent to feed her red flowers with the rest of the Mimiga. Consequently, she near-immediately sends the One-Man Army that is Quote right to the Doctor's doorstep.
  • You Have Outlived Your Usefulness: The Doctor had Momorin tossed off the side of the island not long after the group's arrival, once she confirmed the existence and location of the red flowers. Somehow she survived just fine and snuck her way into the Plantation anyway, helping the player directly in reaching the Doctor as a bit of payback.
  • You Gotta Have Blue Hair: Green, just like her son Kazuma and the human form of her daughter Sue.

    Tetsuzou Kamadani (Unmarked Spoilers

The Hermit Gunsmith
The man who made the Polar Star.

    Ballos (Unmarked Spoilers
Click here to see his second form 
Click here to see his final form 
Once Jenka's kind and loving brother, now a mad sorcerer trapped in the depths of the island.



Rabid Mimiga who kidnapped Sue
Click here to see his whole body 

A frenzied Mimiga. He kidnaps Sue in the Egg Corridor. It is implied he was the caretaker of the Dragon Eggs, as the 3DS version reveals the ID Card is his.


Machine-monster that lurks in the sand
A robotic monster that lives in the Sand Zone. Prior to its appearance, Misery was going to fight the hero. Upon noticing him about to rise from the sand, she leaves dealing with the hero to him.

    Puu Black 

Ghost in the clinic
A "ghost" that haunts an old clinic in the labyrinth.
  • Kaizo Trap: After killing him, it is still possible to take damage and even die if you touch his remaining bubbles.
  • Palette Swap: Of Balrog, for the most part. There are subtle differences between Balrog's sprite and Puu Black's.
  • Spell My Name with an "S": His name is spelled "Pooh Black" in the Aeon Genesis Translation.

    Monster X 

Big boss in the labyrinth
Click here to see its true form 
A large "X" shaped tank that appears in the Labyrinth.

    The Core 

Heart of the island
Click here to see spoilers 
A large, multi-segmented monster that lives in the center of the island.


Big fish in the island's artery
A masked fish that lurks in the Waterway.

    The Sisters 

Twin dragon surprise attackers
A pair of dragons that attack Quote if he decides to pick up the missile upgrade in the destroyed Egg Corridor.

    Ma Pignon 

A tasty mushroom
A mischievous mushroom that lives in Mimiga Village's graveyard. He gives the hero the Mushroom Badge if he saves Curly and tells him about her amnesia. The badge itself does nothing; the actual cure is Ma Pignon himself. However, he won't go down without a fight.
  • Bonus Boss: Required in order to get the best ending.
  • Doppelgänger Attack: One of its attacks involves it jumping into the ceiling and summoning a number of clones. Those are weaker than the real one, and can be destroyed.
  • Jerkass: To put it bluntly, you probably won't feel sorry about having to feed it to Curly due to how obnoxious it is.
  • Let's Meet the Meat: The "I want to live!" kind.
  • Troll: Before fighting it, you have to get the Mushroom Badge from it by answering a series of questions designed to confuse you. Then, you find out it has no use. Talking to it again will initiate the bossfight.

    The Red Ogre/The Red Demon 

True heroes meet the...
A red monster that appears in Last Cave (Hidden). It's implied that this is the creature that Arthur drove away from Mimiga Village.
  • Bonus Boss: Only present in Last Cave (Hidden), only accessed if the player has the Booster 2.0.
  • Chekhov's Gunman: Briefly mentioned by Jack in an optional dialogue in the Assembly Hall earlier in the game.
  • Giant Space Flea from Nowhere: Barely averted, since he gets a optional mention. His appearance in the Last Cave (Hidden) is rather sudden, though.
  • Oni: What his design is based off of. His original Japanese name is even Akaoni (red oni).
  • Palette Swap: Of the generic enemy Droll.
    • The plus version takes it a step further and gives him a Head Swap as well, making him look more like an actual demon.
  • Spam Attack: Like the Drolls he throws blades, but he throws three at a time, pause, then three more, rinse and repeat.
  • Taken for Granite: It turns into stone when defeated.

    Heavy Press 

The swollen mech
A giant Press. It appears as a boss at the end of Sacred Grounds.
  • Boss Bonanza: With Ballos.
  • Flunky Boss: Its only direct attack is its lightning strike. During its boss battle, two Rollings appear, and Butes constantly spawn from the sides of the room.
  • Kaizo Trap: Heavy Press falls through the floor after being killed. The punishment for standing underneath it when it does so is instant death. That is, unless you abuse Mercy Invincibility via one of his minions.
  • One-Hit Kill: If you don't step out of the way as it falls through the floor after defeat, you will die instantly.
  • King Mook: It's a basically larger version of the Presses seen throughout the game.
  • Shock and Awe: It has a lightning attack which strikes directly below it that it uses every so often.
  • Stationary Boss: It only ever moves after its health bar is depleted to crash through the floor. The main threat in its boss fight is the enemies present.

A mysterious machine within the Wind Fortress that produces clones of Curly.
  • A.I. Breaker: The Mooks it spawns won't attack you when you stand on the block at the very left.
  • Bonus Boss: Boss of the Wind Fortress.
  • Mook Maker: Curly clones, to be precise. Naked ones, at that, which attack by grappling you



Mimiga Village's second-in-command. He guards the entryway to the graveyard.


The cowardly loner
A resident of the Grasstown/Bushlands. He lost his key, so he asks the hero to find it for him.


The colorful Mimiga
A Mimiga who resides in the Grasstown/Bushlands. The fireplace in her house contains a passageway that leads to the second half of the area.


Power Supply Bot
A robot that oversees a power room. He helps break Kazuma out of a shelter.
  • Because You Were Nice to Me: Despite his initial aggression, Malco helps Quote after the latter helps him out.
  • MacGyvering: He can make a bomb out of charcoal, gum, and jellyfish juice.
  • Robo Speak: In the Aeon Genesis translation he always speaks in ALL-CAPS.
  • Tin-Can Robot: He certainly gets crushed like one thanks to Balrog.


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