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Lord De Seis is a Super Unique Oblivion Knight found in Diablo's Chaos Sanctuary in Act IV of Diablo II. He can be accessed by activating the northern seal, accompanied by a group of Doom Knights. He and his minions cannot be revived by Necromancers.



Lord De Seis
Lord De Seis (Recent).png
Property Normal Nightmare Hell
Type Undead Undead Undead
Act(s) found in 4 4 4
Monster Level 33 61 88
Health points
Damage 1
Attack Rating 1
Damage 2
Attack Rating 2
% to Block 29 29 29
Damage Resist 0 0 33
Magic Resist 0 0 25
Fire Resist 60 60 60
Cold Resist 60 80 180
Lightning Resist 60 60 60
Poison Resist 60 60 75
Drain Effectiveness 100 75 33
Immunities Cold
Chill Effectiveness 50 40 25
Walk/Run Speed 8 7
Group/Minion Size 1 5/6/7


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This article contains information that is no longer relevant to gameplay, but is kept here for informational purposes.

Lord De Seis (old look)

With the initial sale of Diablo II prior to patching, Lord De Seis's minions were Oblivion Knights. This made him and his minions an extremely deadly force to fight against if the player character was a melee fighter and/or the player's resistances were low, due to the knights' use of Iron Maiden and their magical attacks.

Also in the initial version, De Seis also had a unique ability called "Thief" (from v1.00 to 1.04). Each successful hit on the player would remove an equipped item from the player (changed to potions from the belt in a later patch) and drop it on the ground.

This was especially dangerous for melee fighters who could lose the use of their weapon.

  • Originally in v1.00-1.06b Lord De Seis had a blue color.
  • In v1.07-1.09d he had a red color.


This section contains facts and trivia relevant to this article.
  • It is possible that Lord De Seis is named after the game's Lead Programmer, Richard Seis.
  • "Lord De Seis" translates as "Lord Of Six" in Spanish and Portuguese, which is also related to the number of minions accompanying him.
  • Lord De Seis is also likely a play on words, with "De Seis" sounding like "Deceased," meaning dead, making him Lord of the Dead.
  • Lord De Seis also could be usage of German terminology like (Schenk from A5, who was a legendary 2m tall knight in Hochosterwitz Austria) and come from the German terms Jenseits and Diesseits. Jenseits is "the other world", so the heavens and hell, meaning he would be the lord of our world. Diablo's chosen to rule over the Earth.