There are 20 simulators at all. Some of them won't be unlocked until you beat the last one, and these will give you an extra part or weapon. Note: they are at lvl 1, so be careful to remodel it to its full power.

Effect - Code

Turbo BP - Beat simulator 20
Artassalt MG - Beat simulator 2
Bee-11 BZ - Beat simulator 14
Fuhjin GG - Beat simulator 11
Glowtusk RF - Beat simulator 5
Goldias MS - Beat simulator 17
Vaje (Body only) - Beat simulator 8