(Skeleton × Octopus hybrid monster)
Name: Tentacless Sans (often called “Tenta,” “Eight,” or “Inkblack”)
Species: Hybrid monster: skeleton + octopus
Biological age: ~20–30 (monster years)
Height: 1.75–1.8 m (standing; tentacles can extend higher)
Weight: unusually light due to unique skeletal structure
8 tentacles growing from back/hips (1 tentacle lost ½ due to experiments, cannot fully regenerate)
Body secretes energy ink, used as both weapon and emotional indicator
Low body temperature, prefers cool environments, hates heat
🧬 BODY MECHANICS – OCTOPUS TRAITS
Soft, flexible, highly extendable
Suckers provide strong grip
Partial regeneration, but:
if heavily damaged → regenerates deformed
1 tentacle completely destroyed by Gaster’s energy extraction → permanent half-limb
2. Energy Ink (Ink-Energy)
Not physical ink, but hybrid soul ink
temporarily blinding opponents
slight reality-bending effects (Tenta’s signature)
Ink smells faintly fishy but glows purple-black
3. Detached parts generate energy If a tentacle or part is severed:
→ creates a small “core particle” of energy, useful for research
This was exploited inhumanely by Gaster
Omnivorous like an octopus
Can eat seafood, animals, even live creatures if needed for energy
Cannot consume own body (instinctual limit)
Extremely strong crushing power
Often strangles opponents → slow but decisive fighting style
Some of his “cooked” creations produce mini “reality errors”:
alter surrounding material behavior
Natural ability, not fully controllable
Can darken skin/ink cloud around body
Useful for hiding, ambushing, or “vanishing” in water
4. Bone + Tentacle Hybrid Magic
Summons bones infused with tentacles and ink
Bones coated in fluid layer, stronger than normal bones
5. Water-Based Physicality
Cold/humid environments → speed and strength increase
Hot environments → weakened, more ink leaks
Prefers short fights, extreme efficiency
Protects Papyrus and personal territory aggressively
Uses tentacles to strangle or immobilize opponents
Silent, focused, cold during battle
Raised and experimented on by Gaster from a young age
Tentacles exploited for lab energy
Endured long-term physical pain → formed stoic, enduring personality
After Gaster vanished into the Void, Tenta gained freedom
Papyrus found him while looking for Gaster → Tenta adopted Papyrus
Quiet, minimal expression
Poor at expressing emotions
Sensitive about damaged tentacles
Cold exterior, soft interior
Slightly clumsy in daily life
Ruthless, crushing, extreme efficiency
Results often disastrous, reality-bending effects
Adopted “younger sibling”
Tenta cares but struggles to express it
Always protective; sensitive to anyone threatening Paps
Seen as “scary deep-sea creature but gentle”
Special Swap synergy → two cooking disasters
Ink is curious about his energy ink
Hot temperatures → rapid fatigue
Old lab injuries → painful if overused
Triggered when reminded of Gaster or experiments
Cannot fully control ink energy → accidental incidents
Seafood, especially grilled
Cooking (usually disastrous)
Collecting sea stones and strange bones
