The Pulse Bombu is a creature in Metroid Prime comprised entirely of raw electricity. Resembling three yellow-green spheres attached to a cyan nucleus, it glows as it floats through the air. It periodically releases explosive segments from its body and lacks any intelligence other than an instinctive attraction to charged energy sources.
Samus encounters Pulse Bombus in the Chozo Ruins, Phendrana Drifts and the Phazon Mines on Tallon IV. While they don’t actively attack, the explosive segments they shed pose a hazard. Additionally, they are attracted to sources of charged energy and will instinctively fly toward Samus if she uses her Charge Beam, harming her on contact. Their energy-based nature makes them immune to all weaponry except the electricity of the Wave Beam, but this also means that they will be instantly destroyed if they touch water.
Morphology: Pulse Bombu
Life-form of raw energy. Periodically releases explosive segments from its body.
Pulse Bombus are energy beings, invulnerable to most known weapons. Electrical energy can harm them, however. They lack any intelligence beyond an instinctive attraction to other charged energy sources. Pulse Bombus produce energy constantly. All excess energy is shed, regardless of who or what may be nearby.
"The Pulse Bombu floats through life, periodically releasing explosive segments from its body. It lacks any intelligence beyond an instinctive attraction to other charged energy sources.
The Pulse Bombu consists entirely of raw electricity. It appears to glow as it floats gracefully through the air."