A brief summary of these 4 characters to the newcomers of bossfights
The Tyrant: the Tyrant was and still remains the strongest individual of bossfights as physical strength beat even the mighty Collector’s physical strength. The Tyrant has Tyrant’s gold armor and the Tyrant’s Ultrablade. The Tyrant was the first person to successfully lead an attack on the Citadel.
The War Creator: The War Creator was the smartest being in bossfights, it isn’t as strong as the Tyrant but it makes up for that in intellectual power. The War Creator was the one who created the Inkperials and who also created Hakai, Sagi, and Oracle. The War Creator has armor that is made up of Magisteel (alloy resistant to abilities and magic of all kinds), Resisteel (super resistant to lasers), and Omega alloy. It wielded an enormous sword for its enormous size.
Apex: Apex is the leader of the new order and the wielder of the Kaiser power, Apex mastered his Kaiser power and put up a fight with Hakai. Apex lost some of his power when he took control of Hakai but he now has remastered his power of the Kaiser and is ready to fight.
Ultimum: Ultimum is the ultimate ancient magic god, he was released after Inkmatas read out a chant that came from the Ultima religion. Ultimum was able to put up a fight with Collector and Apex. Ultimum was powerful enough to kill Peyton and had too much power for Inkmatas to handle. However if he dies then near all magic gets weakened due to his death.