Pluto is small and cold, and organic tissue does not fare well in its extreme climate. But the merchant spacemen always seek opportunity for profit in regions where others dare not travel. Robotic proxies act as security in the largely un-manned manufacturing facilities that operate in the area.
—Pluto Fragment
Pluto is a dwarf planet where the Corpus are the controlling faction.
Pluto becomes accessible by defeating the Specter in the Convergencia Plutón on Neptuno after completing the required tasks.
The Assassination Target of this dwarf planet is Ambulas, who is located in the mission node Hades and where the blueprints for the parts of the warframe Excalibur can be obtained. He also has a higher than average chance to drop Mórficos.