Superhumans are humans beyond boundary to form and have powers. Superhuman abilities are found in some fictional characters, especially as superheroes in American comic books. Fictional characters have been portrayed as having psychic abilities, flying abilities, impossible strength, or exceptional proficiency beyond human capability. Superhuman can also mean something that is not human, but considered to be "superior" to humans in some way, e.g. a tiger may be described as having "superhuman strength". Though existent in real life, some examples are not such as pyrokinesis, which is the ability to wield fire by own will out of nowhere from one's self, or invisibility. In real life, superhumans are humans who have abilities such as to read minds, predict the future, or sense things no one else can.