I found this while sorting some of my old sketchbooks and I present it here for steampulp fans, if anyone’s still into that.

The Frogtomaton is some sort of mechanical monster, probably the result of a twisted genius meddling in God’s domain in a misbegotten attempt to wreak unholy vengeance on a world that dared to call him mad, like they do. I imagine it travels like its namesake, but with more crushing. The hiss of building steam, the clank of gears, a shuddering rattle, then leap!
If I ever get my grubby mitts on one of those 3D fabricators a wind-up version of this thing will be released just in time for the Christmas shopping season.