The Gekko are bipedal tanks, codenamed IRVING by the United States military and nicknamed Lizards, are mass-produced biomechanical combat vehicles.

Prompts: Gekko, mechanical body, bipedal walker, biomechanical legs, mechanical structure, mechanical upper body, (non-human), (armless: 1.2), military machine.

Negative Prompts: (humanoid body), (arms, head, eyes, animal), human

The model seems to work well, but for some reason it can add a small animal.