Unicorns were a species of supernatural creatures. It resembled horses with a single horn on their head.
These creatures did not exist outside popular mythology until Clem wrote in the Slayer Handbook that they did, as a favor to Harmony Kendall, who had an interest in collecting unicorn themed items. Also before its existence, the creature had also appeared in Andrew Wells' dream of being as a god.
- "The Initiative" (only in a poster)
- "Real Me" (only as figurines)
- "Judgment" (only as a figurine)
- "Storyteller" (only in a dream)
- "Harm's Way" (only in stickers)
- "Shells" (only as figurines)
- Harmonic Divergence (only as figurines)
- In Perfect Harmony (only as figurines)
- Day Off (or Harmony In My Head)
- In Pieces on the Ground, Part One