Emperor Tachyon


 * "Emperor Percival Tachyon! Crown prince of the Cragmites, conqueror of space and time, and, pending the obliteration of a few insubordinate species, ruler of the universe!"
 * —Emperor Tachyon formally introducing himself to Ratchet and Clank

Percival Tachyon is the main antagonist in Ratchet & Clank: Tools of Destruction. He is a cragmite and his species tried to control the universe but was defeated by the Lombaxes. Then he was still an egg and the lombaxes raised him out of pity and when he learned of his true origins, he vowed to destroy the lombaxes and drove them to another dimension and killed them. Only two remained Kaiden and his son Ratchet who was an infant at the time Kaden saved his son but was left behind. who was sealed away in another dimension at the end of the game.While Dr. Nefarious is considered to be the Main Antagonist of the Series Tachyon is sometimes considered the personal nemesis of Ratchet due to their history.

Tachyon later appears when Artemis Zogg is transported into the dimension that Tachyon is trapped in, they have a brief argument over who rules the fragment of a planet they are on.

It was also rumored that while in this dimension, Tachyon came into contact with a species that every one in the universe had forgotten.