The Takeover of the Never-Realm was an event orchestrated by the amnesic Zane as the Ice Emperor and Vex. Together they overthrew Grimfax and his warriors and took control of the realm.
Takeover
Corruption
After Grimfax refused to help Vex, the latter wandered the wilderness struggling to survive. He witnessed a portal that spat out Zane, who had been banished by Aspheera. Stalking Zane, Vex would be intrigued by the latter's power and usage of his scepter when repelling an Ice Bird.
As Zane attempted to repair the Titan Mech, Vex attempted to steal his weapon but found he couldn't wield it. Having overheard, the risks of Zane prematurely interrupting the progression of his repairs, Vex pulled the mech's plug. This act erased Zane’s memories, as Vex took advantage of this by convincing him that Zane is the Ice Emperor and Vex is his trusted adviser.
With Zane’s help, they overthrow Grimfax and his Warriors and turned them into Blizzard Warriors with the use of his scepter. After that, Zane donned the Ice Emperor Armor and froze the Never-Realm in eternal winter.
Aftermath
The Ice Emperor is born.
Following Zane's takeover, Grimfax was demoted to the leader of the Blizzard Warriors and was the only Warrior that was never corrupted, just turned into one and coerced into serving Zane and Vex.
As the Ice Emperor, Zane used his powers and his Scepter to create the rest of the Blizzard Samurai in which the Sword Masters and the Archers were created out of Dark Ice and Snow. He also created the Ice Dragon Boreal, which would obey his every command.