Havel the Rock

Havel the Rock is a hostile NPC in Dark Souls.

Plot
Havel is mentioned as one of Gwyn's compatriots, and a general in what was presumably Gwyn's army. Since the player finds him automatically hostile with no dialogue whatsoever, it is safe to assume that he is hollow, possibly due to being defeated by the nearby hydra or simply through the passage of time. Havel's ring can be obtained off his corpse, while the rest of his equipment (his armor, his shield, and his weapon) can be obtained in Anor Londo.

Strategy
Havel is a very dangerous enemy, easily killing many players in one hit. His overhead attack also goes through shields, so the best policy is to avoid his attacks altogether and attack him through an opening between his attacks. Havel takes almost no damage whatsoever from most starting weapons and tools (aside from pyromancies). Havel's predictable and slow attack patterns mean that he is particularly suspectible to backstabs, although it will take quite a while to bring him down.