The first batch of minifigs are a fine bunch, though the fourth minifigure shown looks odd with the inclusion of the cape and bright red hip piece. I would personally suggest taking the cape off and replace it with a red one.
The second group is pretty cool! Just give the four on the right generic Clone blasters and the one furthest to the right a largish gun and they’ll be golden.
The third batch is a mixed bag IMO. The first one is pretty sweet, almost to the point of looking like a BrikWars Hero fig. The second is a bit too generic for my taste, with it lacking anything to give it that extra charm necessary to make a memorable minifigure. The one in the middle is cool in theory; a robo-ghost sounds pretty rad. The issue I take with it is the hair, which adds three different concepts that don’t work out too well together. A basic helmet with a visor would fix that right up. The fourth is pretty messy. The legs chosen clash with one another and the red hip piece doesn’t help. The torso is alright, though I don’t think the cybernetic head chosen really compliments it. The last fig is pretty cool (but a cape would make it perfect. )