Planetfall Defense (OEBots) are massive automated attack robots used when tremendous shows of ground force are deemed necessary. About the size of a Magog Swarm Ship, the bots are armed with automatic Gauss guns and large missile launchers. Tweedle-dee and Tweedle-Dum are Planetfall Defense Bots that are stored on Andromeda. It was first used against the Magog on the hull of the Andromeda in space. Andromeda last used them in "The Prince", to defend the prince during coronation.