They were originally created by Dr. Gero Jr to be the ultimate assassins. And as such they get some of the strongest moves and are very strong physically. They also have stats all over the place (like Changlings). Therefore they are not for beginners to RPGs. However, when controlled they are among the strongest races.

Upgrade 1
When the android reaches a PL of 300,000 his body automatically goes thru a change which raises his stats by x2

Upgrade 2
When the android reaches a PL of 2,000,000 his body goes through a 2nd change and his stats go up x3.

Super Android
You must have both upgrades. Once your PL is 15,000,000, then you must merge with another android to achieve Super Android. Both of your stats merge then you get an additional 50,000 Credits.