Lysandre is the boss of Team Flare and the primary antagonist of Pokémon X and Y, who seeks to wipe out most of the world population in order to return the planet to a beautiful, unspoiled state. He is also the owner of Lysandre Labs, the company that created the Holo Caster. 

Team Flare's Boss.

Steven is a skilled Trainer who specializes in Steel-type Pokémon. He is the Champion of the Hoenn region's Pokémon League. A collector of rare stones, Steven is the son of the president of the Devon Corporation, and makes his home in Mossdeep City. He wanders the region, aiding trainers and civilians.