As far as the actual CLOTHES of the costumes, I like Motaro's MKA Alt best. It just needs to be four legged.

Ermac's Alternate Costume in MK9.

MK9's noob saibot in his mk2 costume, i like this costume specifically, only because if you press start after selecting it, you can actually see smoke is now saibot, obviously referencing noob-smoke from mkd

Read the main posts AND the recent posts, please. It halts confusion in the contests. We're voting to see which costume on each specific charater is the best. Please, try not to just write something down, read what's been happening.