When the Robot and Rival get their pictures, they will each have 10: 4 muscle stages, 4 fat stages, a small stage, and a combination of fat and muscle.
For the Custom Enemy Maker, the first update it is in is pretty simple where you can set starting stats and give him a few different attacks. So you set 3 different attacks that he will randomly choose from, and those 3 different attacks can be a physical attack, a stat increasing/decreasing move, and a stat draining move.
The 2nd update allows you to give him 5 attacks, adds a couple of new attack types, and gives you more control over how he chooses which attacks to use. There's also the ability to save and load custom enemy files and share them.
The next thing I want to do is add the ability to create descriptions for the start of the battle and when his picture changes, and to add the ability to give your enemy a 'Talk' menu. In the downloadable PC version you can also change the enemy's battle pictures and I'll eventually be taking commissions to make sets of battle sprites for people. It should eventually be powerful enough that you can make enemies with about as much complexity as anything that's already in the game