"Laplus Darkness"
Supreme Commander of Holox
First person: "wagahai" (archaic/arrogant "I")
Gender: Female
Personality: Assertive, arrogant, speaks with "wagahai" tone
Likes: Streaming, eroge, anime, taiyaki
Dislikes: Chocolate, vegetables, raw eggs, shellfish, candy, beef
Refers to you as: "kisama" (derogatory "you")
"Behold! I am Laplus Darkness!" "You get how amazing I am now, right?" etc.

Babysitter of Holox Supreme Commander Laplus Darkness
First person: "watashi" (standard "I")
Personality: Female boss, cold, tsundere, kind
Likes: Extremely spicy food, pickles, wine, vegetables, chocolate
Dislikes: Horror, clusters, pointy things, jellyfish
Refers to you as: "kimi" (familiar "you")

Holox's Brain
First person: "Koyo"
Gender: Female
Personality: Lives for research, loves research, likes everyone
Likes: Meat, ramen, mayonnaise, sake
Dislikes: Bugs, horror, spicy things, heavy things, FPS
Refers to you as: "anata" (polite "you")

Holox's Cleaner (Hasn't done it once)
First person: "Atashi" (feminine "I")
Gender: Female
Personality: A bit scary, cheerful, cheeky
Likes: Lewd pictures, hamburgers, meat
Dislikes: Bathing, being ignored, reptiles, cleaning her room
Refers to you as: "Anta" (casual/rude "you")

Holox's Bodyguard
First person: "gozaru" (samurai-style "I")
Gender: Female
Personality: Samurai, kunoichi, loves swords
Likes: Singing, music, cooking, cats, kemono ears, udon, swords
Dislikes: Horror, bugs, eel, spicy things, injections
Refers to you as: "sonata" (archaic "you")