Border Break is the latest in a long line of Sega arcade games featuring mechs beating the crap out of each other. Here's an action figure base don one of them, so you can bring the battle to your desktop/bathtub.
This is the Shrike Type I, by Kotobukiya. Scheduled for release in Japan in July, it stands 15cm tall (or, were the robots real, 1/35 scale), and will sell for around USD$40.
Oh, and just to be safe, you may want to skip the whole bathtub thing. Even if it is waterproof - and I don't know that it is - it also looks pointy.
Kotobukiya Shrike Type I Gun Metallic Color [Tokyo Hunter]