Gaper

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Gapers are children that resemble Isaac, but have blood instead of tears, and their skin is more pale. Gapers are commonly found in The Basement and Cellar.

Gapers will attempt to walk towards Isaac by taking the most direct route possible. If there is no way to reach Isaac, due to obstacles such as rocks or poop blocking the way, they will stand still and avoid moving towards Isaac until a proper route is created.

On occasion, they can turn into Pacers or Gushers after dying.

Variations

Frowning Gaper

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Frowning Gapers look identical to regular Gapers, but have empty eye sockets that appear closed before they get close to Isaac. When awoken, they have the same head sprite as Horfs. Frowning Gapers move quicker than Gapers and spawn Pacers and Gushers more often.

Flaming Gaper

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Flaming Gapers behave identically to regular Gapers. They appear to be on fire but despite this they aren't affected by it in any way. They mainly replace all regular Gapers in the Burning Basement but can also appear on the regular Basement and Cellar in rooms containing a high amount of fireplaces.

Cyclopia

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The Cyclopia moves slower than normal Gapers, but leaves behind a trail of creep and occasionally fires a blood shot towards Isaac.

Gurgle

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Gurgles are enemies that look identical to Frowning Gapers. They are green and have at least quadruple the health of a normal Gaper. When they get near Isaac, they fire an Ipecac shot at him. Killing it has a small chance for it to become a Splasher.

They fire Ipecac shots at Isaac at very short range. These shots will kill other enemies in their Area of Effect, but Gurgles themselves are immune to their own shots. Like other enemies' explosive projectiles, Gurgles' shots can be used to shatter Rocks or open Secret Rooms by making Gurgles fire at the appropriate area.

Gurgles are somewhat more predictable and accurate in their shots compared to guts and walking guts, because they will always shoot at Isaac's position. However, the timing of their shots is unpredictable. As such, an effective strategy of delivering explosives to a particular area (e.g. tinted rock or potential secret room entrance) is to stand still in that position as long as possible before moving to avoid getting touched, in order to prompt the Gurgles to shoot their projectiles at you.

Skinny

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Skinnies are a version of the Gaper with melted faces and a very small creep trail behind them. Skinnies travel much slower than normal Gapers, making them easy to kill without receiving damage.

Notes

• Ironically, Skinnies are often seen accompanied by Fatties.

Rotty

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Skinnies are replaced by Rotties in the Depths and below. They still leave creep and can turn into Bonys or several Flies after being killed. Unlike Skinnies they also make different sounds when pursuing the player.

Null

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Nulls appear fairly rarely in the Depths and below. They behave similarly to Frowning Gapers, but walk faster and have the ability to phase in and out of visibility.

Notes

• In Chapter 3, Nulls are most commonly encountered in a 2x2 room layout, where six of them are encased in the center, unable to chase Isaac. Isaac has to blast away some skulls first to open the path to them. Flight as well as spectral tears do very well here, as the player can fly in, drop a bomb, and leave, and the enemies will remain stationary where they were last chasing the player.
• White Champion Nulls may not be able to turn invisible while invincible.

Greed Gaper

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Greed Gapers behave similarly to regular Gapers and are spawned during the Ultra Greed boss fight.

Template:Afterbirth+ 2-3 Greed Gapers have a chance to appear in Treasure Rooms.

Blue Gaper

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Blue Gapers behave similarly to regular Gapers and are spawned during the Hush boss fight. They can rarely appear in Bedrooms and I AM ERROR rooms.

Template:Afterbirth+ They can rarely appear in a closet in The Basement and Necropolis. ^{[citation needed]}

Seeds

Template:PlatPC Template:Afterbirth+ JY6X 2C8V (Room south of spawn)

Trivia

• The appearance of Cyclopias is reminiscent of the fatal birth defect of the same name, which is characterized by the failure of the embryonic prosencephalon to properly divide the orbit of the eyes into two cavities.

Bugs

Bug!	If a Dark-Red champion Frowning Gaper does not become a gusher or pacer and reforms, the head won't appear until the Gaper sees the player. The same goes for a normal Gaper, however, the head won't appear once reformed.

Bug!	If an Explosivo tear is stuck to a Null, when it becomes invisible, the tear will fall to the ground.

Bug!	Sometimes, Dark Green Champion Splashers will not explode upon death. [citation needed]

Bug!	Sometimes, if you kill Champion Gapers and then they will turn into Pacers/Gushers,they will no longer be a champion.

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