I found this model in a cache of unreleased designs from a few years back. You'll need supports when printing. I'll release more from that batch as I get them cleaned up. There's an 18mm scale version of this guy on Thingiverse, though this one is scaled up, is posed slightly differently, and the base has been removed.
For those of you thinking about supporting us on Patreon, our patrons get special access to our store releases as they come out (not to mention license options to sell printed versions of our designs).