One well-known example of a self-proclaimed time traveler is John Titor, who claimed to be a soldier from the year 2036 sent back in time to retrieve an IBM computer for use in the future. Titor gained attention through online forums in the early 2000s, where he made various predictions about future events, such as a civil war in the United States and a devastating nuclear war.

However, Titor's claims were not supported by any credible evidence, and many of his predictions did not come to fruition. Some researchers have suggested that Titor was a hoax, and his story has been the subject of much debate and speculation.

Another example is a man named Noah, who claimed to be a time traveler from the year 2030. Noah gained attention on social media in 2018, where he made various predictions about future events, such as the discovery of a cure for cancer and the colonization of Mars.

However, like Titor, Noah's claims were not supported by any credible evidence, and many of his predictions have not come to pass. Critics have suggested that Noah was a hoax, and his story has also been the subject of much debate and speculation.