What are signs of herobrine?

Signs of Herobrine, a legendary character in minecraft folklore, include strange structures like pyramids or floating trees appearing in the game, which players claim they did not build. Players may also report unusual world generation, such as missing blocks or odd cave formations. Additionally, sightings of a mysterious figure with default Steve skin but white eyes are often cited as a sign of Herobrine's presence. Finally, unexplained phenomena, like animals disappearing or being found in peculiar locations, are commonly associated with Herobrine encounters.