Prophet of Regret

The High Prophet of Regret is one of three High Prophets that lead the Covenant High Council.

Biography
Regret was never mentioned until his appearance in Halo 2. He led the first attack on Earth. His fleet was small for an assault, totaling only two Assault Carriers and thirteen CCS-class Battle Cruisers. It is thought that he was directed to Earth by a Forerunner artifact, perhaps the one on Coral, for he apparently had no knowledge of a human presence. Nevertheless, he sent Ranger Elites and Boarding Craft to destroy the orbital super MAC guns and then directed his two carriers to punch through the UNSC Defenses. Only the one he was on made it through, thanks to the quick actions of the Master Chief.

He landed troops in New Mombasa, the only place the Covenant landed on Earth. The attack on the city was a disaster, the confused Covenant were not prepared to fight such a massive human stronghold. Regret's carrier suddenly initiated a slipspace jump right in the middle of New Mombasa. It is suspected that he had found the location of Installation 05 on Earth, because his lone carrier jumped straight to Delta Halo. The move was so surprising that only the UNSC In Amber Clad was able to follow the Carrier as it jumped and destroyed the city.

His Carrier landed forces on Installation 05, and the Covenant set up a presence around a Temple in the middle of a lake, where Regret began issuing sermons, perhaps in preparation to try to activate the Halo. He also transmitted an apology to Truth, apologizing for his reckless attack on Earth. Truth responded angrily, saying that it was only Mercy who had stopped Truth from publicly condemning Regret. Nevertheless, High Charity and its fleet, the Second Fleet of Homogenous Clarity, rushed to Installation 05 and released a fleet of Phantom dropships full of forces to save Regret from the humans who had overwhelmed Regret's own army.

His sermons were interrupted when the Chief burst in, and managed to attack and kill Regret by beating him to death with his fists. The rescue Phantoms were called back by Truth, and instead a Covenant Assault Carrier quickly destroyed the temple with an Energy Projector.

Regret's body apparently survived the destruction of the temple, and it floated into the lake where it was picked up by the Gravemind. Gravemind then reanimated Regret, turning him into a Prophet Form of the Flood. He made a final appearance in the grasp of Gravemind, where he argued with 2401 Penitent Tangent about the existence of the Great Journey.

Combat
Regret floats around in a Gravity Throne equipped with a weapon reminiscent of the Hunters'(called a Gravity Cannon in Halo 2's files) that fires golden blasts of energy, and is impervious to direct attack. The only way to defeat him is to board his throne and melee attack him. However, Rockets will lock onto the throne as if it were vehicle. Though this will not kill the prophet, enough rockets can hurt him, reducing the number of hits he can take once you board his throne. Also a Lunge with the Energy Sword will weaken him, though not as much as a Rocket.

After a few melee hits, he will throw you off and teleport away, and his throne must be re-boarded to resume the assault. This pattern will repeat until either he or the Master Chief falls.

Regret is not alone, however. Throughout the battle with him, Grunts and Honor Guard Elites will attempt to aid him against the Chief.

Trivia

 * When playing the level Regret, in the large underwater room where you kill a pair of hunters you can lunge at the giant hologram of the Prophet.
 * At one point, the Prophet of Mercy is attacked by an infection form and Truth orders his Brutes to leave him, for to him the Great Journey waited for no one. This contradicts what the Prophet of Regret ruled: "Every member of the Covenant shall the walk the path. None will be left behind when our Great Journey begins! That is the Prophets' age-old promise. And it shall be fulfilled!"

Combat Quotes
"This is the humans' greatest warrior?"

"Warriors, attack! The Demon must die!"

"Your very existence offends me, Demon!"

"Guards! Remove this vermin from my sight!"

"You dare to interrupt my sermon!?"

"Incompetents! I'll kill him myself!"

"The Great Journey will not be postponed!"

"Surely, you can do better than that!"

"Perhaps you have underestimated me, no?"

"Why anyone would fear this Demon is beyond me!"

"Human filth! You emboule this holy place!"

"Your world deserves to burn, Demon!"