Large based

From Attacktix Wiki

Each Attacktix figure has a different base size. The three base sizes Hasbro has currently introduced are small, medium, and large. Star Wars Series 5, when (if) it is released, will usher in a new base size, huge. Large based figures are usually very good at keeping the figure perched on them from toppling. The figure's height, weight, etc. are also distinguishing factors in deciding whether or not the figure will go over when attacked or not.