He is created out pure energy, causing anything to touch him to vaporize. However, the giant green core which acts as his eye is his main weakness. If the polarity of the eye is reversed, Titan will turn completely solid and turn him into pure Kona.
While in Kona form, he can still fight well. His core is still active, although the polarity causes him to be less powerful.
Fighters of Lapis
Reptflux appears in the game, although he is much smaller and less powerful. He doesn't vaporize people on touch, although he has powerful energy blasts from his core. He has terrible recovery, but great power, stronger than anyone else in the game.
In the post-credits stinger, it is revealed to be a Tabuu spy. It is unknown how Tabuu managed to duplicate Reptflux, or even if it was him.