Sesa 'Refumee

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"The Elites are blind, Arbiter, but I will make them see."

- Sesa 'Refumee

Sesa 'Refumee was the leader of the Heretics, referred to in Halo 2 as simply the Heretic Leader, who had taken control of the Gas Mine on Threshold and a small base on Basis, the gas giant's moon which Installation 04 rests between. He is the first main antagonist of Halo 2.

Heretic Uprising
"I wondered who the Prophets would send to silence me. An Arbiter? I'm flattered."

- The Heretic Leader to The Arbiter.

The Heretic Leader commanded an Artifact Retrieval Group attached to the Covenant fleet at the first Halo ring, Installation 04. 'Refumee was busy investigating a Forerunner mining facility in the upper atmosphere of the Gas-giant, Threshold, and was fortunate enough not to be on the Ringworld when the Master Chief destroyed it. Sesa 'Refumee first encountered Installation 04's monitor, 343 Guilty Spark, a few days after the Halo’s destruction. The Monitor "edified" him about the true nature of Halo, the fate of the Forerunners, and the origins of the Flood. This knowledge inspired 'Refumee and the Elites and Grunts under his command to revolt against the Prophets, a decision that led to outright civil war amongst them. He also began to preach the truth to other Elites and Grunts in hopes that others would rally to their cause, which infuriated the High Prophet, Truth.

Sesa was branded a traitor and Heretic by the High Prophet of Truth, who sent the Arbiter to execute 'Refumee. First, 'Refumee tried to hide and protect himself by sending the Flood out to specific areas to kill the Arbiter and his strike team in the Gas Station, as a perilous and lethal Storm raged outside. The Arbiter cut the cable that prevented the station from falling into the gas giant, forcing 'Refumee to come out of hiding. As he attempted to make his escape in a Seraph Starfighter, the Arbiter found him and engaged him in battle. Despite his clever use of Holo-Drones, the Arbiter successfully dispatched 'Refumee and took the Oracle from the station.

With the Heretic Leader's death at the hands of the Arbiter, and 343 Guilty Spark in the hands of Tartarus and the Hierarchs, the Heresy was quelled.

Combat
For all intents and purposes, Sesa 'Refumee, on his own, is just a Sangheili Ranger with differently-colored armor and shields that could withstand up to two Energy Sword lunges, making him accurately comparable to an Ultra Elite. He utilises two holo-drones to assist him in a fight and as a method to stay away from harms reach. These holo-drones, when projected, create two identical models (albeit a darker armor tint) of himself and deals real damage upon the player. When one of the holo-drones is "killed", the model would dissipate and the holo-drone ball would simply fall on the floor. On higher levels, after the first drones are killed the real Sesa will fly into one of the pipes and several more drones will appear. However, the real Sesa will often hide in one of the pipes on the top of the room. He will not respond to damage and can be easily killed with a Carbine or Needler.

Production Notes
Sesa 'Refumee was voiced by Miguel Ferrer in Halo 2.

Joyride Studios released a Heretic Leader Action Figure in series 8 of their Halo 2 8 inch action figure collection, and also released the hologram version of the heretic leader which is rare to find. WizKids produced a miniature figure of Sesa 'Refumee in their first set of Halo ActionClix products wielding dual Plasma Rifles. 'Refumee is one of the most powerful units in the initial release, being worth 200 points.

Trivia

 * Sesa 'Refumee is the first known Elite to to break away from the Covenant, and the first to possibly know the truth of Halo. Even though 'Refumee left the Covenant, he didn't remove the warrior "ee" suffix from his name. Possibly this removal only applied to Covenant Separatists and not Heretics.
 * The Heretic Leader's favored weapons are dual-wielded Plasma Rifles, even though his Heretic warriors wield Covenant Carbines, not Plasma Rifles.
 * Despite the fact that Sesa was only in Halo 2, he was released with the Halo Action Clix which were made to promote Halo 3. The figure is "Super Rare", according to the series key.
 * Sesa 'Refumee seemed to be a Heretic Leader for a very long time, yet he knew of Thel 'Vadamee's trial ("How did the Prophets buy your loyalty, Arbiter? With a new command, a new fleet,...or was it the promise ... their 'Great Journey'?"). This may be either an overlooked mistake by Bungie, or an indication of corruption within the Covenant.
 * There is a glitch in which if you keep lunging at Sesa through the window on The Arbiter, when he escapes on a Banshee you will go through, and then you should throw a plasma grenade at the Banshee so he can't get in it. If you push him off he will die (if you push him off with a Banshee, he won't die, even if you attack him or if he falls out of the map). Also, you can watch the Elites and the Phantom shoot at him, as he is an enemy, but they don't know he's invincible.
 * Due to the armor he wears, he was probably a Ranger before the heresy.