Here is my latest ant weight combat robot, the Krave Monster.
This robot is kind of a combination of a "dust pan" style combat robot with a clamp style. The dust pan forms the bottom of the mouth, and has a movable front wedge that keeps enemy robots from driving out to the mouth. The top of the mouth comes down on the opponent, helping to trap them on top of the dust pan (and scoring extra judge points).
Because my design requires the robot to "eat" other robots, I had to use a light weight material for the body. I ended up using foam board. This will get beaten up by other robot, but all of my electronics are quite far from the edges, so no real damage should be done. Also, the robot isn't invertible, so I am hoping that the foam will be hard for vertical weapons to catch onto, which could flip the bot. We'll see how it holds up come competition.
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/cereal-box-combat-robot