Zoids!

I saw some new Zoids (at least ones I'd never seen before) that come in
packs of six at my local KB Toys.  They're just about the right scale
for Dirtside, and include a variety of figures.  I saw two different
packs, and thought they'd be great if you wanted to throw a curve to
players in a game, including one that looks like Godzilla.  IIRC,
they're $7 a pack.