VV: Ultimatum Bosses
Boss encounters with spawn timers, locations and notable drops - including the full timer schedule.

Argus
Argus, The Sharp, is a boss in VV: Ultimatum with a three-move documented kit - Triple Smash, a posture-punishing Parry counter and a Ground Slam - that drops the Monkey Head and Hollow Parts.
Boss Timers and Locations
VV: Ultimatum's rotating world bosses spawn at :20 past the hour EST - Junichiro and The Parasite on even hours, and The Northern Army, the Quincy Commander and the Masked Warrior on odd hours.

Calamitas
Calamitas, Cinder of the Broken Sky, is a summonable primordial hollow boss in VV: Ultimatum, called forth with Ritual Oil at the Hueco Mundo ritual site and ascending into a storm-wreathed final phase at 20% HP.

Giant Dragonfly
The Giant Dragonfly, the Winged Terror, is a Soul Society Outskirts boss in VV: Ultimatum that summons swarms of Dragonfly hollows mid-fight and drops the Swarm charm plus 2 Soul Society Outskirts Chests.

Junichiro
Junichiro, The Wandering Swordsman, is a scheduled world boss in VV: Ultimatum who spawns in Hueco Mundo beside Emeki every even hour at :20 EST and ignites his blade in a fiery second phase at 60% HP.

Mammoth
The Mammoth, titled The Gargantuan, is a boss in VV: Ultimatum with three documented attacks - Throw, Stomp and Laser Rain - two of which can only be dodged.

The Masked Warrior
The Masked Warrior is a three-phase scheduled world boss in VV: Ultimatum that spawns in the Soul Society Outskirts every odd hour at :20 EST, activating his Shikai at the end of phase one and surrendering to his inner Hollow in the final phase.

Nix
Nix, The Gelid Dweller, is a boss in VV: Ultimatum with a documented respawn timer of 7 minutes 30 seconds and the Golem charm as its documented drop.

Securis
Securis, The Reaver, is an axe-wielding boss fought in the Colosseum of the Arctic Plains in VV: Ultimatum, known for reviving defeated players once mid-fight and imbuing his axe with lightning at 4 bars.

Shamballa
Shamballa, Master of the Dark Arts, is a boss in VV: Ultimatum whose only documented reward is the Chaos Shades drop.

The Crocodile King
The Crocodile King, Scourge of the Marsh, is a crocodile-like hollow boss in VV: Ultimatum who sits on his throne in Swamp King's Retreat, respawns roughly every 5 minutes, and discards his Morning Star for a faster Cero-wielding second phase at 40% HP.

The Grey Hunter
The Grey Hunter is a boss in VV: Ultimatum whose documented rewards are the Poison Touch charm and Spider Eggs.

The Northern Army
The Northern Army is a scheduled Arctic Plains boss encounter in VV: Ultimatum against three brother commanders - Evocator the Soulcatcher, Frigus Master of the North, and Lord Nivis Heir of the Dead - spawning every odd hour at :20 EST.

The Parasite
The Parasite, Devourer of Hosts, is a scheduled world boss in VV: Ultimatum found in the parking lot beside The Factory in the Human World, spawning every even hour at :20 EST and dropping the Parasite's Mask and Aura of Terror.

Vasto Lorde (Mission)
The Vasto Lorde is a mission boss in VV: Ultimatum: after High Command detects a massive reiatsu signature in Hueco Mundo, players find an adjuchas devouring a menos that evolves into a Vasto Lorde before their eyes.