Incubus 
Effects
- Spawns a demonic familiar that copies Isaac's tears.
- (Removed in Repentance) Incubus' tears ignores Isaac's range and shot speed.
- (Added in Repentance) Incubus' damage is reduced by 25% when playing as characters other than (Lilith) Lilith.
Notes
- Lilith's starting Incubus is technically not a collected item but an intrinsic part of the character, and is removed if an item such as
Ankh or (Added in Afterbirth †)
Clicker are used to become a different character. As such, playing as Lilith will not add Incubus to the collection page.
- Incubus is one of the familiars that can be spawned by
Cambion Conception.
- (Added in Repentance) Incubus has the second highest priority of following familiars, below
King Baby.
- (Added in Repentance) This item belongs to the Conjoined set. Collecting three items from this set will transform Isaac into a three-faced version of himself. Lilith's Incubus, however, does not count towards the transformation.
Synergies
- (Removed in Repentance) (Azazel) Azazel /
Brimstone: Fires a full length Brimstone laser that can be charged while still firing the previous laser, allowing it to fire more rapidly than normal.
- The laser fired by Incubus has the same width as
Lil Brimstone's.
- (Added in Repentance) When playing as (Azazel) Azazel, Incubus' Brimstone laser has the same range as him.
- (Added in Repentance)
Berserk! / (The Forgotten) The Forgotten /
Spirit Sword: Incubus will carry the respective melee weapon, using it exactly like Isaac.
- (Added in Repentance)(Forgotten Lullaby) Forgotten Lullaby: Doubles fire rate of Incubus. This notably makes it fire and charge attack faster than Isaac does.
Interactions
- (Added in Afterbirth † / Removed in Repentance)
Analog Stick: No effect. Stat changes still apply.
- (Removed in Afterbirth †)
Cursed Eye: No effect.
- (Added in Afterbirth † / Removed in Repentance) A burst of 3 tears is fired at the regular tear delay without needing to charge.
- (Added in Repentance) Incubus now charges and fires a burst of 5 tears just as Isaac would.
- (Removed in Repentance)
Dead Eye: Only Isaac's tears affect the damage multiplier.
- (Removed in Repentance)
Epic Fetus: No effect.
- (Removed in Repentance)
Evil Eye: No effect.
- (Added in Afterbirth † / Removed in Repentance)
Eye of Greed: No effect.
- (Added in Afterbirth † / Removed in Repentance) (The Forgotten) The Forgotten: Fires bone tears like
Compound Fracture without the splitting effect. Reverts to normal tears when switching to
The Soul.
- (Added in Repentance)(Found Soul) Found Soul: While the soul is alive, decreases Incubus' damage by 20%.
- (Added in Afterbirth † / Removed in Repentance)
Flat Stone: The effective range of Incubus' tears is roughly doubled, with a single bounce in the middle of the flight.
Guillotine: Incubus will fire tears in relative position to its body depending on where Isaac's head is currently.
- (Added in Afterbirth †)
Ghost Pepper: No effect.
- (Added in Repentance)
Immaculate Heart: Incubus can create its own orbiting tears, which will orbit the Incubus that created it, and not Isaac.
Isaac's Tears: The item is recharged by Isaac's tears, not Incubus'. This item works with (Lilith) Lilith.
Kidney Stone: Incubus ignores the range down from this item, and will fire the tear barrage but not the stone.
- (Added in Repentance) Incubus is still able to fire tears while Kidney Stone is charging.
- (Added in Afterbirth †)
Large Zit: No effect.
- (Removed in Repentance)
Loki's Horns: No effect.
- (Removed in Repentance)
The Ludovico Technique: Incubus' tears become piercing and spectral but otherwise fires normal tears.
Maw of the Void: No effect. (Removed in Repentance) Stat changes still apply.
- (Removed in Repentance)
Marked: No effect. Stat changes still apply.
- (Removed in Repentance)
Mom's Eye: No effect.
Mongo Baby: Does not copy Incubus's tear effects.
- (Removed in Repentance)
My Reflection: Since Incubus ignores shot speed the tears turn back very quickly, greatly reducing effective range.
- R U a Wizard?: No effect.
Tech.5: No effect.
- (Removed in Repentance)
Tech X: Incubus shoots small, fixed-size Tech X laser rings, with a very slightly longer minimum charge than Isaac.
Technology 2: No effect. Stat changes still apply.
- (Removed in Repentance)
Tractor Beam: No effect. Stat changes still apply.
- Tractor Beam +
Monstro's Lung: Tears now follow the beam.
- (Added in Repentance) The Incubus tears will follow the beam.