This "Pokémon" was born because I thought that there had never been a Pokémon that shared the Steel and Poison types before, so I thought: "What would a Pokémon look like with this duality of types?"
Then I thought of mercury as liquid metal and highly toxic and immediately my mind began to work on the possibilities of how it could be, at first I thought of a quadruped, a reptile, and finally I chose this humanoid form.