HsWAV-15

The HsWAV-15, also known as Ten Legs (10本脚) is an unmanned armored vehicle used by Academy City.

Principles
The Ten Legs is a problem-control armored vehicle, with tank-like turrets attached to its top. Similar to the Six Wings, it is unmanned. According to Shiosai, the Ten Legs is meant for war.

Magic God Invasion Arc
During the High Priest's rampage through Academy City in pursuit of Kamijou Touma, a unit comprised of Six Wings and Ten Legs are dispatched to fight against him but are soon decimated.

Trivia

 * Going by the patterns for Academy City's weapon naming schemes, HsWAV likely stands for Hard Science Walking Armored Vehicle.