Shadow Leech

"What slipped past Tanma was a slime-covered leech about two feet long, faintly glowing with a pale, sickly light."

- Shadows in the Sky

Shadow Leeches were mutated kraata that had the abillity to suck light out of Matoran and Toa. The Matoran would then become a Shadow Matoran gaining the element of Shadow and losing their abillity (for example if a Shadow Leech sucked all the light out of a Ko-Matoran, he would have lost the resistance to cold upon becoming a Shadow Matoran).

Known Victims

 * Radiak (former Av-Matoran)
 * Gavla (former Av-Matoran)
 * Kirop (former Av-Matoran)
 * Vican (former Le-Matoran)
 * Takanuva (Now Toa of Twilight)
 * Vultraz (former Ta-Matoran)

It is later revealed in the story that "Kraatana" are shadow leeches.