Binding of Isaac: Rebirth Wiki

This article is about Dead Onion, not to be confused with The Sad Onion.

Dead Onion is a passive item.

Effects[ | ]

Notes[ | ]

  • Although the description says "Toxic aura tears", the tears do not do toxic/poison damage.
  • Using Dead Onion in a Crawl SpaceCrawl Space will cause tears to fall through the floor.

Synergies[ | ]

  • (except in Rebirth)Collectible Incubus iconIncubus: Does not affect shot speed or tear size, but still gives the piercing effect.
    • (in Repentance): Shot speed, range, and tear size will be affected.
  • Collectible Lost Contact iconLost Contact: Tears will destroy enemy projectiles without being destroyed in the process.

Interactions[ | ]

  • Character Azazel iconAzazel: Not recommended. Range penalty is the only effect.
  • Collectible Dr. Fetus iconDr. Fetus: Not recommended. Bombs are slow to fire and will pass through enemies, making it far more difficult to hit them with explosions.
    • (in Repentance) Bombs also deal 2.5x Isaac's damage to enemies when passing through them.
  • Collectible Epic Fetus iconEpic Fetus: Overrides Dead Onion, although stat effects apply.
  • Collectible Brimstone iconBrimstone: Overrides Dead Onion, although stat effects apply.
  • Collectible The Ludovico Technique iconThe Ludovico Technique: Not recommended. Tear moves very slowly making it hard to kill mobile enemies.
  • Collectible Mom's Knife iconMom's Knife: Overrides Dead Onion.
  • Collectible Monstro's Lung iconMonstro's Lung: Fires a barrage of large tears that disappear at close range. Spectral and piercing effects make it very effective at close range.
  • Collectible My Reflection iconMy Reflection: Not recommended. Tears will travel a very short distance before they return to Isaac and eventually disappear.
  • Collectible Proptosis iconProptosis: Not recommended. While tears do massive damage at short range, it makes it a lot easier to be damaged by explosive enemies or enemies that do contact damage.
  • Collectible Rubber Cement iconRubber Cement: Edges of tears retain both piercing and spectral effects; however, the center of the tear will lose them and bounce.
  • (in Afterbirth † and Repentance)Collectible Sulfuric Acid iconSulfuric Acid: Not recommended. Acid Tears no longer impact objects and can no longer open Secret Rooms.
    • (in Repentance) Acid Tears can break objects (but still can't open doors or Secret Rooms).
  • (in Repentance) Collectible Technology iconTechnology: Laser size is increased.

In-game Footage[ | ]

Trivia[ | ]

  • Dead Onion has the most stat downs out of any other item if tear falling speed is counted as a stat.