Black Knight Greatsword

The  is an Ultra Greatsword in Dark Souls, which can be obtained from Black Knights wielding the weapon.

Availability
Dropped by Black Knights semi-uncommonly wielding the Black Knight Greatsword. A non-respawning one is located early on in the Undead Parish (located on the top of the tower leading from where the player encounters the rats), while another (which respawns) can be found in the Kiln of the First Flame.

Characteristics
The Black Knight Greatsword deals high damage, although in that aspect it is unremarkable for an ultra greatsword. Its high weight and very slow moveset make it a difficult weapon to use.

Black Knight weapons tend to feature incredibly slow R2 movesets, and this weapon is no exception.

Upgrades
The Black Knight Greatsword requires Twinkling Titanite as well as 2,000 souls per upgrade.