Shasu

Mass Effect 2
Shasu is a dwarf planet that is believed to have been ejected from Agnin during a giant impact with another planet-sized body. At the time, Agnin had a magma ocean covering much of its surface, and the liquid rock sprayed into space, where it coalesced and cooled over millions of years. The theory is that during this cooling, Shasu first orbited Agnin but was eventually pulled from that orbit by the gravity wells of other planets, primarily Dranen.

Today, Shasu is relatively temperate, with a light hydrogen-helium atmosphere, attracting spacers who use its atmosphere to refuel. Its crust composition is similar to Agnin, evident in its high sulfur content.

Mass Effect 3
Shasu is a dwarf planet that is believed to have been ejected from Agnin during a giant impact with another planet-sized body. At the time, a magma ocean covered much of Agnin's surface; the liquid rock sprayed into space, where it coalesced and cooled over millions of years. It is theorized that during this cooling, Shasu orbited Agnin but was eventually pulled from that orbit by the gravity wells of other planets (primarily Dranen).

Today, Shasu is relatively temperate, with a light hydrogen-helium atmosphere that attracts spacers who use its atmosphere to refuel. Its crust composition is similar to Agnin, evident in its high sulfur content.