Ynot (YFU)

In the Ynot Fallen Universe, Ynot was the ruler of the Matoran Universe.

History
At some point in the history of this universe, Ynot defeated Blackout and went on to rule the MU without anyone to oppose him. He also took the Icarus satellite weapon from Blackout and used it to achieve his goal.

One day, the YFU's Icarus was sucked through a portal by Xeno, who wanted to use it to destroy the Original Universe's Roxtus. However, OU Blackout stopped him by using the OU Icarus to destroy the YFU's Icarus. YFU Ynot traced the teleportation signature that his Icarus left behind to the OU, where he witnessed the battle between Blackout and Xeno. Ynot decided to punish them for destroying his superweapon by grabbing the OU Icarus and aiming it at Roxtus, but he unwittingly activated its defense mechanism, which backfired and disintegrated him with an antimatter beam.

Trivia

 * Another version of this Ynot exists that originates from the Ynot Risen Universe. The two universes have identical history, but the YRU's version of the Icarus was never stolen, and thus Ynot never went to investigate its disappearance that led to his death.
 * YFU could also stand for "You Fucked Up", which seems to fit this version of Ynot pretty well.