I made these when the idea for a rogue-like retro-style System Shock 2 game flew around in my head. Some colors could use improvement I think, but overall I'm happy with how most of these turned out, especially the maintenance bot (the yellow one). This was basically the first time I made a set of 16x16 sprites.
From left to right:
"Goggles", Cyborg Midwife, Hybrid w/ pipe, Hybrid w/ shotgun, Arachnid, Protocol Droid, Maintenance Bot, Security Bot, Assault Bot, S.H.O.D.A.N. cyberspace form.