An Annihilator Bomb was planned to be a powerful combined weapon created by laying a Power Bomb while the Annihilator Beam was equipped, releasing both Light and Dark energy particles that would seek out nearby enemies. Light Bombs and Dark Bombs were also planned, but eventually scrapped. These Power Bomb combinations were all ineffective against Denzium, making them useful only in combat situations.
- "The Annihilator Bomb is a potent explosive, combining the Power Bomb with the energies of the Light and Dark Beams. When in Morph Ball mode, press [IMAGE] to select the Annihilator Beam, then press [IMAGE] to drop an Annihilator Bomb." —Unused Inventory Data (Metroid Prime 2: Echoes)
- "Samus's Notes:
When an Annihilator Bomb detonates, it emits a cloud of Light and Dark energy particles. These deadly particles will seek all enemies within a radius.
The Annihilator Bomb is not effective against Denzium." —Unused Samus's Notes (Metroid Prime 2: Echoes)