I did this splash art as practice using a character i designed for a hypothetical RTS called Obelisk. The Mothron Ironclad is a ruthless melee unit with a charge attack. They counter Fulminator units.
Mothron have a deep connection to nature, and for their warriors animals in nature are an inspiration of fierceness, thus Ironclads go to their most primeval instincts of violence when joining battle, instilling fear in their opponents. In addition to this, tribe shamans often magically enhance the physical abilities of Ironclads to make them stronger.