Mercury is the Greco-Roman God of Messengers. He was the desk clerk of the Elysian Fields Hotel in which the other Deities gathered to discuss the Apocalypse. He was the one who obtains blood from Sam and Dean, so Kali could bind them to her. He betrayed their location (and thus the location of the Winchesters) to Lucifer, resulting in his murder, alongside nearly all the other deities, save for Kali, who was saved by the archangel Gabriel.
Powers and Stats
Name: Mercury, Hermes
Age: Thousands of Years Old
Classification: Pagan God, Greco-Roman Deity, possibly a Trickster
Powers and Abilities: Superhuman Physical Characteristics, Superhuman Speed, Superhuman Senses, Immortality (Types 1), Reality Warping, Plant Manipulation, Draws Power from Worship, Sacrifices and Consumption of Human Flesh, Magic, possibly many others
Speed: At least Subsonic+ Movement Speed (Casually moves as a blur, is possibly one of the fastest characters of the series)
Lifting Strength: At least Class 2 through Powerscaling
Striking Strength: Unknown
Durability: Unknown, likely Small Building level
Range: Several Dozen Meters
Standard Equipment: None Notable
Intelligence: Should be high due to his age.
Weaknesses: Is far weaker than he was in the past, due to a lack of worshippers.