Motrokh was a fusion of a Toa of Water and a Toa of Ice. He was with Vorahk-Kah when the Fellowship of Kakamu was formed. He was a member and accompanied Vorahk-Kah and Muta when they teleported onto Darkmount.
When the city-ship took off, Motrokh, along with the rest of the Fellowship, was sent into interdimensional space.
Much later, Motrokh appeared, along with the rest of the FoK, and kidnapped Trantoshen, believing he was Kakamu. He then attacked Blackout, but the Makuta dropped him into a pit of lava.
- When Motrokh spoke, it sounded like the voices of a male and female Toa both speaking at once.