The Xiezhi are rare – they always have been – and seeing one tends to be a significant experience because of their reaction to injustice.
Most Guardians are defensive; the Xiezhi go on the offensive. If they see what they consider to be injustice, they will, without fail, attack the villain without mercy, goring with its single horn, then devouring.
Their appearance lands somewhere between a lion and a dragon, and their colors range from grey to gold. They have one horn in the center of their foreheads.