Reality Stone

Transformed into a fluid-like weapon called the Aether, the Reality Stone (red) first appears in Thor: The Dark World when Malekith the Accursed attempts to use the Aether to destroy the Nine Realms and return the universe to its pre-Big Bang state; only to be thwarted by Bor, who had it hidden. Jane Foster becomes infected by the Aether after coming across its resting place, though Malekith later draws it out of her. After Malekith is defeated by Thor, Sif and Volstagg seal the Aether in a lantern-like container and entrust it to the Collector to keep it separate from the Tesseract; as they consider it unwise to have multiple Infinity Stones close to each other.The Aether, once bonded to a host, can turn anything into dark matter as well as suck the life force out of humans and other mortals. The Aether can also disrupt the laws of physics and repel threats if it senses any.