Fenrakk spawn were a species of spider Rahi native to Voya Nui. They possessed great strength and acidic saliva.
Jaller was relying on spider-like Rahi called "Fenrakk Spawn" to help the Toa Inika smash the Piraka outposts, but Nuparu was not sure how far they could trust these creatures.
Hewkii rode a chariot drawn by a Fenrakk spawn spider into battle against the Piraka stronghold. This chariot was a rare example of the usage of wheels in the Bionicle universe.
Smaller versions of the Fenrakk spider were seen on Voya Nui, making it likely that that particular specimen was mutated by the Mask of Life.
Fenrakk were not native to Voya Nui.
Fenrakk were native to Voya Nui.
Fenrakk weren't common on Voya Nui.
There were a fair number of Fenrakk on Voya Nui.
Fenrakk spawn were not as strong as the enlarged Fenrakk.