- The "Elemental Heroes" designs were mostly based on 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.
- It may also be based on William Wallace from Braveheart
The Fusions of "Wildheart" appear to be "Wildheart" wearing his Fusion partner's armor/costume.