Bilrach

Bilrach (pronounced Bill-rack ) is a Zamorakian Mahjarrat that was first mentioned in Zemouregal's Notes - Part I. His entry describes him as follows:

Pre-Daemonheim
Not much is known about Bilrach and his role during the God Wars. In the Chronicles of Bilrach, it is revealed it was actually Bilrach that created the demon K'ril Tsutsaroth and summoned him to this plane to be used as a General in Zamorak's army during the God Wars. He also claims in his notes that he is Zamorak's second in command.

Role in Dungeoneering
In the Dungeoneering skill, the player can find books and journals called Chronicles of Bilrach. It appears that he is responsible for constructing the tunnels at Daemonheim. He ends his messages with the phrase "Zamorak be praised." During his entries he also calls Zemouregal a fool who underestimates his skill, meaning maybe Bilrach is only going along with Zemouregal to disguise his power or possibly the power source he was seeking. However, the 24th Chronicle of Bilrach reveals that he is attempting to reach the rift deep in the earth, a place where the barrier between realms thins, which he believes he could use to travel the realm Zamorak resides in and release him into Gielinor.

Since Bilrach is responsible for the summoning of the various monsters in Daemonheim, and has also converted the Kal'Gerion demons to his will, it is possible that he has reached a state of power comparable to Lucien's. On the other hand, it is possible that Bilrach has been led on throughout his journey in Daemonheim, it seems he has been guided by whispers that he has thought to have been Zamorak all along. Chronicles 1, 11, 13, 27, 29, and 30 reference these whispers, and you may begin to hear what they were when Dungeoneering on an Occult floor.

Bilrach is also responsible for the release of the Gorajo tribe in Daemonheim. In the year 1890 of the Fourth Age, while Bilrach was opening portals somewhere in the thirty sixth to forty seventh floor, he accidentally opened a portal to the realm of these sentient beings. At first he attempted to convert them, but they instantly became his enemies upon seeing his dark and cruel methods (including necromancy and demon summoning, which they strongly despise.) He strongly hates this race for their constant meddling in his affairs. Ramokee exiles may be converted Gorajo who have sworn allegiance to Bilrach, and thus are traitors to the tribe.

Nadir
Nadir documents Moia's search for Bilrach following some unusual marks appearing around the Ritual marker. A year before the current date, Moia finds Daemonheim and manages to infiltrate the area through use of various disguises. Upon reaching the Occult floors, she starts to find portals that offer her some form of power up, boosting her lifepoints and magical abilities.

At the end of the saga, Moia encounters Bilrach in a room with the Ritual marker. At first he is quite insane, (he cannot make a coherent sentence), but after some further conversations he becomes sane. He explains that the portals provide a greater source of power restoration than the Ritual of the Rejuvenation does, making him far more powerful than any of the other Mahjarrat ever expected and that he is preparing to rule Gielinor once enough Mahjarrat slay each other.

What happens between Moia and Bilrach depends on the player's decision.

The 18th Ritual of Rejuvenation
Bilrach did not attend the 18th Ritual of Rejuvenation. When speaking to Wahisietel after completing the Ritual of the Mahjarrat quest, he will discuss the strange power that occurred before Dungeoneering was released, and confirm that the strange power was "A case of the wrong Mahjarrat being in the wrong place at the wrong time.." and that it was "Such a waste of power." This hints that either Bilrach or Moia perished apon reaching the rift, deep within Daemonheim. Which one might have perished is as of yet unknown, although It is revealed in the Book of Zamorak that Moia left Gielinor from Daemonheim and went to a different plane where she met someone she thinks is Zamorak himself. This would imply that it is Bilrach who died - however, this cannot be seen as certain, as it is unknown exactly what transpired at the bottom of Daemonheim.

Trivia

 * Bilrach wears the same symbol that appears on the ring of kinship.
 * In Astea Frostweb's and Lexicus Runewright's journal, received in the Dungeoneering Skill, Lexicus and Astea mention Bilrach as "Bill" and that he is the master of Daemonheim. In addition, Lexicus gives the player clues as to what Daemonheim is for and more on Bilrach's nature. He mentions that Bill "believes it will be the magical discovery of a thousand lifetimes". On page six of his journal he says "Astea and I must confront him" after saying that "Bill would cast us all over into the darkest of darkness".
 * In her journal, Astea also mentions "Bill" and on page six says "Lexicus has uncovered a truth too horrible to comprehend. We must kill Bill. We go now to confront him, and end this madness." The phrase "Kill Bill" is a reference to the two-part Quentin Tarantino film and anime of the same name, or the slogan of various financial companies.
 * The last known entry in Chronicles of Bilrach was written in year 165 of the Fifth Age, 4 years before the current date in RuneScape.
 * According to the BTS of February 2013, Bilrach has sinkholes that contained his wealth and materials for his master plan.