unless you will be zoom right up to the robot, and able to see every single detail that it has to offer, it really should be between 6k - 8k poly, due to its detail structure. - On that note, you could then use LOD (Level of Detail)

The 3dgs engine will render the model so you dont have to worry about making it perfectly rounded off (allowing you to use less polys).

The best way to reduce polys in this case, would be to re-create your robot, with a 50% less poly count.


All in all, I really like the look of your robot! I like that it balances on one wheel and the addition to the hands, has made it that much better.
The smirk on its face makes it look like its up to no good and the panels on the top of its head, look like solar panels; So I can just imagine in a game, if there was no sun, it would start to lose power.

Keep up the good work!
Look forward to seeing an update!