You can't have Snake Eyes without Storm Shadow.
And not just any Storm Shadow, but Version 2 from 1988:
For this mini, I tracked down the Reaper Miniatures Ninja Bowman (04419).
(Sorry the picture is a little blurry, but I was trying to take a picture of a Ninja after all.)
Unfortunately, this mini is no longer for sale from Reaper, so you'll probably have to find it on ebay or elsewhere.
If you prefer the original Storm Shadow look, well, there are *tons* of Ninja minis out there for you to choose from.