Yesterday, the original Terminator won in a landslide victory over Maximilian from The Black Hole. The question now is—how will he fare against Caprica 6 from Battlestar Galactica?

Both the Humanoid and Heavyweight Battles will continue tomorrow. Cast your vote and feel free to suggest a new opponent in the comments.

This tournament poll of the world's deadliest robots was proposed to us by our friend PW Singer, author of Wired for War: The Robotics Revolution and Conflict in the 21st Century which we covered last March. Stay tuned for more of the tournament, more from Singer, and for more scary-ass robots wreaking havoc on fleshy humans and metallic adversaries alike.

Machines Behaving Deadly: A week exploring the sometimes difficult relationship between man and technology.

Send an email to Sean Fallon, the author of this post, at sean@gizmodo.com.