Thanks for the kudos, Optimus Primer and TheCanadiandrome! While we're at it, let's have another...
So this is actually one I started a reaaaally long time ago -- like, nearly a decade ago. Back then I did a couple of Foot Ninjas using Spectacular Spider-Man bases and mostly finished this one then as well, but for variety I wanted this one to have a cloth gi and belt. And... I didn't get around to that part of the equation until a few weeks ago. But it's finished, and the Shredder has one more recruit for his ranks. Huzzah!
Anyway, Spectacular Spider-Man figure (black costume, version 2), sculpted glove cuffs and pant poofs (and added calf swivels below), and cloth gi. Black elastic for the belt. Simple and effective.