Ursla Oktauko (Brother Bear) is the only weapon, and personal Zanpackto of Kaize Muhso. As being an Arrancar, Kaize's Zanpackto does not posses any abilities, and appears as nothing but a normal brown colored katana.
  • Ressurecon Special Abilitly: Kaize's release command is Hibernate and once unleashed Kaize becomes more Bear like. With her mask covering the bottom of her mouth to resemble a bears snout and growing brown fur similar to a grizzly bear. Her Arrancar attire becomes more form fitting and closed at the top, becoming more like a robe towards the bottom. In this form, Kaize can shoot a powder on her emmenies to force them into falling asleep. She grows a very long and thick but powerful furry bear tail which is capable of being used as a weapon or to lift and strangle a victim.
  • Enhanced Strength and Speed: Complimenting her already impressive speed and power, Kaize's released state augments her speed drastically, giving her animalistic agility and movement to match, allowing her to keep up with the vizard-enhanced Bankai form of Grimmy. While in her released form, Kaize's already enormous strength further increases. She dispatches two of her opponents with presumably little effort.Kaize's strength is so immense that when she threw Ryshi to the ground, she was unable to recover due to the air pressure being too hard on her body.
  • Cero: It is brown, which Kaize states to be similar to Raysuke's black FuutonGetsuga. This Cero presumably can only be used while she is in her release state. Kaize's Cero is powerful enough to blast Grimmy's mask away and destroy a large part of the city-sized Las Noches' dome.
  • Overwhelming Spiritual Power: Kaize's already-immense spiritual power is significantly increased furthermore upon entering thisstage. Even being within the vicinity of his release instils despair on those who can sense it. Karin, an expert who is an expert at sensing chakra, noted that the density of Kaize's spiritual power was so vast that it could hardly be identified as reiatsu. "It's like no spiritual energy I've ever felt before...It's not just bigger or stronger. It's too dense and heavy to even be called spiritual energy. It feels like there's an ocean above the sky..."