O.V.U.M.'s Fortress is an unofficial name for the fortress at the end of Gradius Gaiden.
O.V.U.M.'s Fortress exploding
Description[]
O.V.U.M.'s Fortress is the home of the invading Dark Nebula forces. It is located at the center of this dangerous nebula.
Trivia[]
- O.V.U.M.'s Fortress looks like a mechanical Brain.