No Name

Master Xehanort's Keyblade (マスター・ゼアノートのキーブレード) is the default form of Master Xehanort's Keyblade that appears in Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance.

Kingdom Hearts Birth by Sleep
Although Master Xehanort does not often draw his personal Keyblade, he wields his Keyblade in this form whenever he does fight, channel his own dark magic, and also uses the weapon's ability to lock and unlock hearts.

Master Xehanort used this Keyblade to extract the dark half of Ventus's heart to create Vanitas at the Keyblade Graveyard, slay Master Eraqus in cold blood and sent the Land of Departure into darkness, and at his and Terra's final battle at the Keyblade Graveyard.

After Master Xehanort extracts his own heart which takes over Terra's body, Terra-Xehanort retains usage of this Keyblade and uses it during his battle with 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 and losing the ability to wield the Keyblade.

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

Kingdom Hearts 3D: Dream Drop Distance
Following his revival in the Sleeping Worlds version of the World That Never Was, Master Xehanort continues to wield this Keyblade and attempted to use it to place a fragment of his heart inside Sora to make the boy into the thirteenth vessel/"member" of the True Organization XIII.

Design
Master Xehanort's Keyblade has a spiky, black guard resembling demonic wings, a horned, demonic 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. Master Xehanort is capable of converting his Keyblade into an orb of dark energy, which is shot into the sky to summon Kingdom Hearts. No Heart has displayed the ability to detach the head of the Keyblade to form an impenetrable barrier, as well as tranform the Keyblade into a claw-like weapon, a greave, or a pair of wings that allow flight. His Keyblade possesses a Keychain, which has a black charm with another demonic blue eye upon it.

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