Soul skeletons ｢霊骨, reikotsu｣ are the result of skeleton-type undead undergoing the process of awakening and the elemental soul variants of wights. Adalmann obtained this form after undergoing Rimuru's Harvest Festival ritual.
Known soul skeletons[]
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| Spirits
| ||
|---|---|---|
| Main | ||
| Angels | Archangel • Artifact angel (Artifact archangel • Artifact evil angel) • Power • Virtue • Dominion • Throne • Cherub • Seraph | |
| Daemons | Lesser daemon • Greater daemon (Diable chevalier) • Archdaemon (Arch doll) • Daemon lord • Devil lord • Metal daemon | |
| Elementals | Lesser elemental • Medium elemental (Beast Gnome • Salamander) • Greater elemental (Darkness • Ifrit • Light • Sylphide • Undine • War Gnome) • Elemental lord (Elemental lord of flame • Elemental lord of land • Elemental lord of wind) | |
| Fairies | Pixie (Chatty pixie) • Dark goblin • Dryad • Elemental-demonic lord (Flame lord) • Enki • High dwarf • High elf • Lorelei • Oni • Siren | |
| Variants of elemental souls | Soul beast • Soul bird • Soul boar • Soul dragon (Dragon majin) • Soul insect (Soul wasp) • Soul man • Soul oni • Soul skeleton • Soul wolf | |
| Miscellaneous | ||
| Other | Demon slime • Divine giant (True giant) • Dragonoid • Holy spirit of light • Manas • True Dragon (Ultimate slime) | |