Cyrus

Cyrus is the leader of Team Galactic. For most of his appearances, Cyrus appears to be completely stoic, but he explains early on in the games that this emotionlessness is done on purpose; he views emotions as a fallacy of the weak human heart, and always strives to be above such things. He is extremely adept with machines.

In Pokemon Diamond/Pearl/Platinum
His defeat in the games differs between versions. In either Diamond or Pearl, he furiously attacks the player after his plan to take control of Dialga or Palkia fails thanks to the Lake Trio (Uxie, Mesprit and Azelf) and he simply leaves, swearing to build his new world someday.

In Platinum, his plans to take control of Dialga and Palkia fail not just because of the Lake Trio intervening, but Giratina appearing in a rage due to him about to willfully disrupt time and space and capturing him, taking him to the Distortion World. He believes that the real world and the Distortion World will cease to be because of Giratina's defeat or capture, and stays in the alternate world.