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And there went another horse that was red: and power was given to him that sat thereon to take peace from the earth, and that they should kill one another: and there was given unto him a great sword.

–Revelation 6:4

BC War
Art by Edmund McMillen
The Depths
Related Bosse(s)


Headless Horseman
Effective Item(s)
Dropped Item(s)
Cube of Meat

War is one of the four Horsemen of the Apocalypse, a boss which can be encountered at the end of the first floor in The Depths or Necropolis instead of a traditional boss once the player has beaten the game for the first time (killed Mom). War appears as a red, humanoid-like being in a state of permanent rage with a pair of large, beady eyes riding on a stick horse. Unlike the other horsemen, War's stick horse appears to be a bull instead of a horse. 


Phase 1


  • While riding on his horse, he charges to the left or right and comes out on the other side, but does not stop until he has done 3 passthroughs. While charging, he will always enter the screen about 1/2 of the room height below where he left. If this distance would put him below the edge of the room, then he will come back in at the top of the room instead.
  • Also, while mounted, he shoots out an 8 directional shot, generally right after charging.
  • And also while riding, he will jump off and summon 5 Troll Bombs (similar to "The Tower" tarot card and "Anarchist Cookbook" item), wait for them to explode, and then land.

Phase 2

War horseless ingame

  • Activated when he reaches 50% of his total Health. Here, he will have lost his horse and will follow the player with extremely fast speed, similar to Lust or Gemini. However, like Gemini, he will occasionally pause to catch his breath, making a "splits" pose like the one Loki uses when firing bullets. He does this after you deal enough damage to him. Edmund also mentioned that he will slow down if you continue to attack him. It makes the fight easier for playthroughs with no speed upgrades.
  • If the player has the ability to fly, rocks will not protect him from War's phase 2, as he will climb those rocks in order to attack the player.

Champion Version

War black


During phase 1, he leaves a Troll Bomb behind his path whenever he charges through the screen, and he will more frequently charge than regular War. He jumps off less often, but when he does, he summons 2 Mega Troll Bombs instead of half a dozen normal Troll Bombs.

During Phase 2, he normally chases you around the room, but when he is stunned, he fires out 6 bullets in six different directions. The champion War is also slower if the player continues to attack him.

He sometimes disappears from the screen completely after a jump attack. If you aren't able to exit your current room or kill him through AoE (e.g. Necronomicon), your game will be lost. In this case, homing tears will go towards you (confirmed only in a Famine-War combinate room in The Chest).



  • Using poison damage such as Bob's Rotten Head on War can cause glitches. If War takes damage while offscreen dropping bombs, he can get stuck and never return. This often requires you to restart the game. This also happens with The Candle. It's still possible to continue the game if you have either a teleporting item or the 1-Up / Ankh (Kill yourself with bombs, then respawn before the Boss Room). You can also still kill him with the Candle if you have it, as the Candle will damage him regardless of if he's on-screen or not, like it does for Mom's Heart/It Lives and Mom's doors.
  • During phase 1, it is possible that when War lands he will be invisible and stay invisible for the rest of the fight.
  • If you use the Book of Belial (and possibly other similar items or Tarot Cards) while War teleports off screen to summon troll bombs, he may become an invisible target, and will not spawn any troll bombs. Upon reaching half of his life bar, he will start chasing you as usual, but still remain invisible. (Confirmed)
  • If his horse is killed while he is spawning the Troll Bombs (like from poison), he will not return on screen. Killing his horse while he is still on your screen will result in War staying on your screen, doing no damage nor taking damage (he can still be damaged using The Candle).
  • If the player can fly and he flies over rocks, War can glitch out and go through the rocks and damage the player.
  • On rare occasions, usually after using the Book of Revelation on the Depths or Necropolis, War can be replaced by Conquest, despite that the versus screen tells you that War is the boss whom you're about to fight. Plus, after defeating him you don't get his White Pony but War's cube of meat.
  • If War is over rocks and the horse is killed (using Spectral Tears or anything like that) and still being shot at, War will be stuck in the rocks and cannot chase the player. This can be fixed with bombs.


  • War is the only horseman with any (visible) eyes. (Not counting the Headless Horseman).
  • The boss art shows that War is skinless.


The Harbingers Related
Famine Pestilence War Death Conquest Headless ingame
Famine Pestilence War Death Conquest Headless Horseman

Regular Bosses
Blastocyst button

Chub button

Daddy Long Legs button

Daddy Long Legs
Dark One button

Dark One
Dingle button

Duke of Flies button

The Duke of Flies
Fallen button

The Fallen
Fistula button

Gemini button

Gurdy button

Gurdy Jr button

Gurdy Jr.
Gurgling button

Haunt button

The Haunt
Larry Jr button

Larry Jr.
Little Horn
Loki button

Mama Gurdy button

Mama Gurdy
Mask of Infamy button

Mask of Infamy
Mega Fatty button

Mega Fatty
Mega Maw button

Mega Maw
Monstro button

Mr Fred button

Mr. Fred
Peep button

Pin button

Polycephalus button

Rag Man
Scolex button

Widow button

Posthumous Bosses
Adversary button

The Adversary
Blighted Ovum button

The Blighted Ovum
Bloat button

The Bloat
Cage button

The Cage
Carrion Queen button

Carrion Queen
The Forsaken
The Frail
Gate button

The Gate
Hollow button

The Hollow
Husk button

The Husk
Lokii button

Monstro II button

Monstro II
Teratoma button

The Stain
Wretched button

The Wretched
Alternative Bosses
CHAD button

Gish button

Sister Vis button

Sisters Vis
Steven button

Triachnid button

Conquest button

Death button

Famine button

Headless Horseman button

Headless Horseman
Pestilence button

War button

Final Bosses
XXX button

Isaac button

It Lives button

It Lives
Lamb button

The Lamb
Mega Satan button

Mega Satan
Mom button

Mom's Heart button

Mom's Heart
Satan button

Ultra Greed
Seven Deadly Sins
Envy button

Gluttony button

Greed button

Lust button

Pride button

Sloth button

Wrath button

Seven Super Deadly Sins
Envy button

Super Envy
Super Gluttony button

Super Gluttony
Super Greed button

Super Greed
Super Lust button

Super Lust
Super Pride button

Super Pride
Super Sloth button

Super Sloth
Super Wrath button

Super Wrath
Ultra Pride button

Ultra Pride
Angels / Demons
Krampus button

Angel button

Angel button

Angel button

Fallen Angels
LEGENDS: The Binding of Isaac bosses are yellow. Wrath of the Lamb bosses are teal. Rebirth bosses are orange. Afterbirth bosses are crimson. Afterbirth † bosses are violet.

Start a Discussion Discussions about War

  • 4th mistake

    • did you noticed in the boss screen war's horse/bull is brown and in game is red?
  • War glitch.

    7 messages
    • wrote:War blew up the boss room door, and shoved me out when I used Book of Shadows. You can't beat that son of a bitch if ...
    • Just now, when War he used his bomb attack,I used the sun tarot card and he did not come back. 

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