Subterranean Worm

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From BIONICLEsector01

"The Toa of Earth had heard of these creatures before but thought they were only Matoran legend. Those who mined protodermis, the substance of which everything on Mata Nui was built, had occasionally spoken of great tentacled worms that lived in the very deepest tunnels of Onu-Wahi."
— Narrator, Tales of the Masks

Subterranean Worm
Conservation status Unknown
Known locations Onu-Wahi (formerly)
Spherus Magna[1]

Subterranean Worms are large, tentacled Rahi.


The Subterranean Worm species was created by the Makuta using Viruses and Liquid Protodermis to be one of the Rahi to inhabit the Matoran Universe.[2]

After the Great Cataclysm, a population of Subterranean Worms migrated through the Great Barrier to the newly-created island of Mata Nui. Here, they dwelt deep in Onu-Wahi for 1,000 years, where they were occasionally sighted by Onu-Matoran Miners.[3]

When Toa Nuva Onua and Turaga Whenua were searching for Kanohi Nuva underground, they encountered a Subterranean Worm.[3] Onua subdued it by using his Quake Breakers to create a loud noise, which pained the Subterranean Worm due to its sensitive hearing. The Subterranean Worm then retreated.[4]

When the Toa Nuva intentionally unleashed the Bohrok, the Subterranean Worms migrated back to Metru Nui.[5]

After the Great Spirit Robot was critically damaged in the Battle of Bara Magna, the surviving Subterranean Worms left the Matoran Universe and immigrated to Spherus Magna.[1]

Abilities and Traits

Subterranean Worms are huge (up to twelve feet long), bleached white in color, and eyeless. They have six long, clawed spines that can be used as whips, capable of rending six inches of metal in one strike.[6][7] Instead of seeing, they navigate by sound, which Onua used to his advantage. They are also rumored to feed on Protodermis.[3]







  1. 1.0 1.1 "Official Greg Dialogue", post 11964. BZPower Forums. (archived on
  2. Makuta's Guide to the Universe, p. 63.
  3. 3.0 3.1 3.2 Tales of the Masks. BIONICLE Chronicles 4, p. 30.
  4. Tales of the Masks. BIONICLE Chronicles 4, p. 33.
  5. "Official Greg Dialogue", post 1357. BZPower Forums. (archived on
  6. 6.0 6.1 Challenge of the Hordika. BIONICLE Adventures 8, p. 7.
  7. Chat with Greg Farshtey, 23 October 2014
  8. "Chat with Greg Farshtey", post 11484839. LEGO Message Boards. (archived on