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Gemini
Boss Gemini
Found In
The Basement
The Catacombs (Double Trouble)
Boss Rush
Normal Enemy (Later Floors)
Dropped Items
Boss Pool


For the item, see Gemini (Item)


Gemini is one of the bosses that can appear in The Basement. Gemini is composed of not one, but two separate "bosses": One large twin with a smaller twin attached to him. They both have the same amount of health, sharing the health bar fifty-fifty.

BehaviorEdit

  • The large twin will chase the player, then periodically charge at them at high speeds. Afterwards he will stop to catch his breath.
  • The smaller twin, while attached to the larger, will shoot tears at the player if not behind an obstacle.
  • When the larger twin is killed, the smaller one will detach and begin charging furiously at the player. Caution is advised when trying to juggle the smaller twin, as the knock-back from tears could cause him to gain speed.

Champion VersionsEdit

Green: They start off separated from each other and have no difference in attacks.

Blue: The blue variant has more health.

TriviaEdit

  • Gemini appeared in the original Binding of Isaac.
  • Gemini is named after the astrological sign of the same name; not to mention that the symbol of Gemini are twins.

BugsEdit

-For The Cellar to unlock, the player must kill all the Basement bosses once; however, Gemini counts as two depending on which part the player kills first.

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Bosses Boss Monstro
Basement MonstroGeminiDingleLarry Jr.The Duke of FliesGurglingsFistulaStevenFamine
Cellar Gurdy Jr.PinWidowBlighted OvumThe HauntDingleLarry Jr.The Duke of FliesGurglingsFistulaFamine
The Caves ChubGurdyGurdy Jr.Mega MawMega FattyDark OneC.H.A.D.Pestilence
Catacombs The HollowThe HuskPeepPolycephalusThe Carrion QueenThe WretchedDark OnePestilence
The Depths The CageMonstro IIThe AdversaryThe GateLokiGishWarMom
Necropolis The BloatThe Carrion QueenMask of InfamyThe WretchedThe GateLokiWarMom
The Womb Mr. FredScolexTeratomaMama GurdyThe BloatLokiiDeathConquestMom's HeartIt Lives
Utero BlastocystDaddy Long LegsTeratomaMama GurdyThe BloatLokiiTriachnidDeathConquestMom's HeartIt Lives
Sheol The FallenSatan
Dark Room The LambMega Satan
Cathedral Isaac
The Chest ???Mega Satan
Devil Room Krampus
Angel Room Angel
Levels 1-5/7 The FallenThe Headless Horseman
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