connect the head and torso

The centerpiece still needs to be larger, in particular towards the legs.

I need some clarification: Do you mean taller or wider?

He has to have a broader chest to look strong. When I look at it now I feel I could snap it in 2. Also the feet are too far away looks a little wierd not sci-fi.

this is for a a "stealth-action" game ?
he is suppose to be able to throw his arms ?

==>
- I think the robot should be less round and more agressive (more angle in the design, a lot more)
- you should also change the arms to make them look like a "lance" (like a weapon that hurt I mean !)
- the leg are too big
- the head could be more original

in fact the big question : he is suppsoe to be human ? humanoid ? other ?

 The bottom half of his body (the smallest floating bit) needs to be made longer in my opinion.

It would help if we had some info on this characture.

Does any of it's attacks use body parts?
Is it suppose to be very strong, or quick & stealthy?
Is it a soldier, or a freelancer?

Any other info that might be helpful?