Daniel John (Danny) Hearn, also known as Animal Man, is an Australian member of Vanguard International from the late 21st century.
Daniel Hearn was born in Melbourne, Australia, in 2063.
In 2083, while on a vacation to Mandelovia, Hearn was captured by Dr. John Feldman, who experimented on him using nanites for approximately two months. Feldman injected Hearn's bloodstream with nanites that could alter parts of his body to resemble animal body parts, enabling Hearn's body parts to also take on the animal's characteristics. Feldman imprinted another mind into Hearn's brain, called Hal, that obeyed the voice commands of either Feldman or Hearn. For example, when Feldman or Hearn uttered a phrase such as "cat's tail," Hal caused the nanites to reshape part of Hearn's body to form a limb resembling a cat's tail. Unfortunately for Hearn, the process was quite painful at first.