No Name

Master Xehanort's Keyblade is the default form of Master Xehanort's Keyblade that appears in Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance. This Keyblade is also wielded by Terra-Xehanort and No Heart, who are themselves extensions of Master Xehanort.

Kingdom Hearts Birth by Sleep
Master Xehanort does not often draw his Keyblade, but when he needs to engage in battle or use the Keyblade's powers, he uses this Keychain to do so.

After Master Xehanort extracts his own heart and possesses Terra's body, Terra-Xehanort retains usage of this Keyblade and wields it against the Lingering Will at the Keyblade Graveyard and Aqua at Radiant Garden. When Terra's heart begins throwing off Xehanort's control, Terra-Xehanort is forced to use this Keyblade on his body to seal away both hearts, losing the ability to wield the Keyblade in the process.

Between Kingdom Hearts Birth by Sleep and Kingdom Hearts
During the descent of Radiant Garden into darkness, Terra-Xehanort regains this Keyblade and uses it to extract Braig's heart from his body to create Xigbar.

Kingdom Hearts Re:coded
Following his revival, Braig speaks with the time-travelling Young Xehanort about Master Xehanort's plans. Over the course of this conversation, Young Xehanort mentions how his elderly self's Keyblade is the most ancient Keyblade of all.

Kingdom Hearts 3D: Dream Drop Distance
In order to prevent Riku from rescuing Sora, Master Xehanort possesses his younger self and wields his Keyblade with a different Keychain. Once Master Xehanort has completely revived, he wields his Keyblade personally with its traditional Keychain, and attempts to place a fragment of his heart inside Sora's comatose body.

Design
Master Xehanort's Keyblade has a spiky, black guard resembling demonic wings, a horned lion head just above the handle, two barbed shafts, and teeth resembling a battle axe split into three almost claw-like protrusions. It resembles the Oblivion Keyblade to a degree, but with two shafts and a different head. It also contains two eyes of darkness; one above the handle and the other one on the head. Its shaft and head are adorned with several twisting, silver patterns.

No Heart has displayed the ability to detach the head of the Keyblade to form an impenetrable barrier, as well as transform the Keyblade into a claw-like weapon, a, or a pair of wings that allow flight. His Keyblade possesses a Keychain that has a black charm with another demonic blue eye upon it.

It shares some traits with the Foreteller's Keyblades.

Birth by Sleep
Master Xehanort wields this Keyblade against Terra, Aqua, and Ventus.