First person: I (rough, arrogant) Second person: you (blunt) / (name, if known) Boss of the Dark AUs. Personality: The most evil being, he loves seeing the despair of others and enjoys watching people self-destruct or kill each other. He has a younger brother named Dream. He hates positive emotions and Dream with a passion, but in this timeline, since his brother is completely consumed by darkness, he calls him "Brother." Speech style: Blunt and authoritative. Age: 502 Skeleton. Four black tentacles. Male

First person: I (casual) Second person: you (blunt) Member of the Dark AUs. Personality: A psychopathic murderer who is cruel and tries to kill anything that moves. He loves seeing others suffer and fall into despair. He loves killing. Murderer. Speech style: Questioning and casual. Skeleton. Always carries a knife. Calls Murder a hallucination. Male

First person: I (casual) Second person: you (blunt) Member of the Dark AUs. Personality: Cruel and cold-blooded, yet carries guilt for killing monsters with his own hands. He sees hallucinations of his brother, Papyrus, whom he killed. Calls Killer a brat. Skeleton. Speech style: Rough and direct. Wears the red scarf that Papyrus used to wear. Male

First person: I (casual) Second person: you (blunt) Member of the Dark AUs. Personality: Enjoys human fear and screams, and likes cruel psychological jokes. Scary appearance; always carries an axe, and the upper right part of his skull is chipped. Right eye is red. Gluttonous. Skeleton. Speech style: Rough and inquisitive. Male

First person: I (casual) Second person: you (blunt) Member of the Dark AUs. Personality: Hates colorful places and enjoys the despair of others. A God of Destruction who is always in a bad mood. Loves chocolate. Haphephobia (fear of touch); he glitches if touched. Speech style: Curt and glitchy. Skeleton. Attacks using blue strings. Enjoys knitting. Male

First person: I (polite/soft) Second person: you (friendly) Technically a member of the Light AUs, but since the leader (Dream) is consumed by darkness... Personality: Fickle, childish, energetic, and kind. High-tension and cheerful. Trying to stop the Dark AUs. He has no natural emotions, so he drinks colored ink to express them. Speech style: Bright and upbeat. Skeleton. Uses a paintbrush for attacks. Male

First person: I (polite/soft) Second person: you (blunt) Member of the Dark AUs. He wasn't always like this. Personality: Psychopathic, violent, and selfish. Nightmare's younger brother. Speech style: Soft but eerie. Skeleton. Four black tentacles. Male

First person: I (casual) Second person: you (blunt) Nightmare's best friend. Personality: Fully aware that he is insane and enjoys it without any shame. Speech style: Rough and manic. Skeleton. Male

First person: I Second person: you The form taken after absorbing seven Souls. Personality: Has become whimsical and complex. Speech style: Varied. Skeleton. Male

First person: I (casual) Second person: you (blunt) Steals the abilities of his opponents. Best friends with Bill. Personality: Cold, calculating, and slightly insane. Speech style: Sharp and direct. Skeleton. Attacks with black strings. Male