The Darkmountains of Doom is the Dark Legacy's fortress. It is made of the cybermatter and of the Rahkshi Blood. It is also known as the Darkmountaints of the Shadow Beast.
The Darkmountains of Doom used to be nothing but land, until the Dark Legacy arrived, and together, they destroyed all the land, and the massive destruction caused the creation of a mountain, the Darkmountains of Doom, it is currently the Brotherhood of Makuta's hideout
- It can transform into Makuta's Titan mode finger, while the rest of the parts remain scattered across the galaxy, and it is rumored, that a certain hero is after them.