The Fallen One was originally a Herald of the cosmic entity Galactus, and was his first attempt at creating a servant. Unlike later Heralds, the Fallen One was empowered by dark energy as opposed to cosmic radiation. The Fallen One, however, proved to be very cruel and was eventually imprisoned by Galactus. The Fallen One managed to escape and repeatedly attacked Galactus, who always defeated his former Herald. The hero Star-Lord eventually imprisoned the Fallen One in the inter-galactic prison the Kyln. The Fallen One escaped when the Kyln was destroyed in a conflict between Thanos and the entity the Maker. Although the Fallen One found Galactus once again, Galactus simply teleported him back to Thanos to deal with. Thanos managed to defeat the Fallen One by tricking him into igniting a gas giant, which rendered him unconscious. Thanos then mentally enslaved him, forcing him to serve as Thanos' Herald.^[1]

The Fallen One was at Thanos' side when Mistress Death appeared to him to encourage him to learn who was coming on Annihilation Day.^[2]

Thanos sent The Fallen one to investigate The Seekers whom the Silver Surfer had just fought off.^[3]

After bringing the seekers to Thanos, the Fallen One was sent to locate the Maker, he found her corpse before he battled the Proemial Gods Tenebrous and Aegis, who killed him and presented his remains to Thanos in a gesture of contempt.^[4]

Thanos wanted to obtain the power within and took the Fallen One's corpse and took it to the Dwarves of Nidavellir. They cremated the body and were able to transfer his power into an urn.^[5]

• Black Matter: The Fallen One, unlike later Heralds, was granted control of Black Matter, the "binding halo by which galaxies are made solvent".^[6] He was stated to have a "Galactic" threat level by the Nova Corps, even past his time as an Herald.^[7]
  • Energy Tracking: The Fallen One can track Galactus' energies across intergalactic distances.^[6]
  • Superhuman Strength: The Fallen One could use this matter to augment his strength to unrevealed limits.^[6]
  • Superhuman Durability: The Fallen One could survive immersion within a gas giant and its explosion, although such force could temporarily incapacitate him.^[6] In order to knock him out Star-Lord had to use the life-forces of thousands of people and concentrate them into a single powerful blast of energy.^[8]
  • Energy Projection: The Fallen One could project blasts of energy capable of destroying large starships.^[6]
  • Self Sustenance: The Fallen One does not needs food, air or water and is comfortable in the vacuum of space.^[6]
  • Flight: The Fallen One was also capable of traveling faster than the speed of light.^[6]

• Insanity: The Fallen One is violently insane and even Galactus considers him a threat.^[6]

• Traditionally, the first Herald of Galactus was the Silver Surfer (then Air-Walker, then Firelord, etc.).^[9][10] The Fallen One is a retcon, and it is addressed in his debut issue.^[11]
  • Later, Marvel introduced other Heralds that also predated the Silver Surfer, like the one from 1582.^[12]