Gemini

This article is about the boss. For the item, see Gemini (Item). Gemini is a boss that can appear: • Only in the Basement. • In the Basement and the Burning Basement. Each twin has 140 HP. The large twin is called Contusion and the small twin is called Suture.[1][2] Contents • 1 Behavior • 2 Champion Versions • 3 Gallery • 4 Arena • 5 Notes • 6 Trivia • 7 Bugs • 8 References

Gemini starts as a pair of bosses connected together by an umbilical cord.

• Contusion chases Isaac and periodically charges increasing his speed, but stops to catch his breath afterwards.
• Suture, while attached to Contusion, shoots a projectile towards Isaac if not behind an obstacle.
• If Contusion is killed first, Suture detaches and begins charging furiously at Isaac. He has high momentum and takes extra knock-back from tears, which can cause him to gain speed.
• If Suture is killed first, there is no change to Contusion's behavior.

Blue: Suture shoots homing shots. Contusion will drop a Soul Heart if killed last. Green: They start separated from each other and have no difference in behavior. However, if Contusion is killed last, it will usually drop a Red Heart or Half Red Heart, but will rarely drop any other type of Heart instead ( Soul Heart, Bone Heart, Gold Heart, etc).

• Status effects will equally affect both Contusion and Suture even if it was only applied to one of them. This includes effects granting knockback such as Knockout Drops. Charming one or both of the twins causes them to attack one another, often leading to a much quicker boss battle.
• This also applies to Green Champion Gemini, despite the twins being completely separated entities.

• Gemini appeared in the original The Binding of Isaac.
• Gemini seems to be an example of a parasitic twin, with Suture being the underdeveloped twin, dependent on Contusion.
• Blighted Ovum is the posthumous version of them, and Steven is the alternate version.
• The Gemini pair is named after the astrological sign of the same name; the symbol of Gemini is a pair of twins.
• The Gemini pair was originally designed to be a boss in Gish and was called Suture Contusion, with the larger twin being Contusion for the boot-shaped dent in his head.[2]
• Contusion is the medical name for a bruise, whereas suture is the medical name for a thread used to close gaping wounds, commonly called stitches.
• The names of the brothers are inspired by a song by The Mars Volta[1]
• The specific lyric comes from "Cicatriz ESP."
• In the Bestiary, Suture is referred to as "Gemini Baby".