Nemesis (Final Fantasy XIII)

Nemesis is a dummied fal'Cie in Final Fantasy XIII. It operates the Seventh Ark, a training ground for l'Cie. It is a purple palette swap of Anima, and would have fought similar to it, but being a dummied enemy the battle is unfinished. Its design was later used for Final Fantasy XIII-2 to make the Proto Fal'Cie Adam.

If the Seventh Ark is hacked into, the Nemesis battle can be accessed, and Nemesis is the only enemy in the Ark that can be battled against. After the battle Lightning says their power should be used for saving the world, rather than for evil what the fal'Cie wanted in training them strong enough to take on Orphan.

Etymology
The fal'Cie tend to be named after summoned monsters from the series. Although there is no Nemesis summon, there is an optional boss called Nemesis in Final Fantasy X.