- The card's design seems to be based on Austroasiatic aboriginals. This is supported by the tribal tattoos and boomerang weapon.
- The "Elemental HERO" monster designs may be influenced by American super heroes; the inspiration for Wildheart was most likely Ka-Zar of Marvel Fame or possibly Anthro or Kamandi of DC (the first and the last boys on earth respectively). Or possible Apache Chief from the DC Super Friends.
- It could also be based on the pulp fiction character Conan the Barbarian.
- In addition to "Cyclone Boomerang", this monster has an anime-only support card known as "Wild Half".
- This card's effect, Level, and ATK are the same as "Tenkabito Shien".
- This monster and "Elemental HERO Clayman" are the only "Elemental HERO" monsters whose alternate artworks in the anime (while being used by the Supreme King) are not in the OCG or TCG.