Pyramidion

Overview

The Pyramidion is a Vex machinoforming engine in Echo Mesa on Io. The Vex used it to convert the moon into a Machine World, and it is the lair of Brakion. According to Ikora Rey and Asher Mir, every Vex Machine World has one as its main machinoforming engine, and the structures share a connected interior. The Pyramidion holds far more data than typical Vex facilities and contains Warp Gates to thousands of places and realities.

Story

Before the Red War, Asher Mir and two fellow Hunters entered the structure. They died and were revived repeatedly until they reached a radiolarian lake, where a tentacle seized Asher's Ghost. He woke with his right arm converted into a Vex limb, a conversion that was irreversible and still spreading. He settled in The Rupture to study the machines and pursue revenge against Brakion.

Later, the Guardian arrived on Io, worked with the Red Legion, and entered the Pyramidion at Asher's request to kill the Genesis Mind. They fought through heavy Vex resistance and remnants of the Taken, reached the core and defeated Brakion, which halted the conversion of Io for the time being (2017).

Years later, a Pyramid landed over Io. Asher concluded that the Darkness wanted to claim and dissect the Pyramidion. He refused Zavala's proposal to evacuate to the Last City and went back in alone. He tore through the Vex until they withdrew, and at the lake he found it suspended where the sky should be and pulled it down with both arms (2020, Season of Arrivals).

Strike

The Pyramidion is usually an inaccessible sector that can only be entered while the Pyramidion Strike is active. The Strike is a series of areas linked by warp gates and teleports, ending in a boss fight at the Final Altar, and defeating the boss completes it and lets players leave the sector.