Jack is sometimes characterized as random and quirky and at other times depressed because of his immortality. He works at the SCP Foundation and is constantly getting himself into shenanigans. There is a very long list of things Jack is not aloud to do at the foundation. The SCP foundation, of which he works at is responsible for capturing and containing various paranormal, supernatural, and other mysterious phenomena unexplained by mainstream science (known as "anomalies" or "SCPs.