Osid

Osid, also known as Ossid or Ossid-2, is a fictional entity appearing in American comic books published by DC Comics. It is primarily associated with the character Plastic Man. Osid is depicted as a gaseous being originating from the planet Mars, or at least an alien entity with Martian origins.

The entity's existence is often tied to strange phenomena or unusual events that Plastic Man investigates. Osid's motivations and exact nature are not always clearly defined, contributing to its enigmatic presence. It is sometimes portrayed as an antagonist or a source of conflict for Plastic Man, while at other times its role is more ambiguous.

The first appearance of Osid was in Plastic Man #2 in 1966. Over its comic book history, Osid has been involved in various storylines, often testing Plastic Man's abilities and his understanding of the bizarre. The entity's gaseous form allows for unique interactions and challenges within the narrative, as it can flow through small spaces and is difficult to physically contain. While not a recurring major villain, Osid remains a notable element in the mythology of Plastic Man, representing the strange and otherworldly threats he often faces.