???'s Only Friend

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Item icon
Item altar

 
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Item Pool Treasure Room.png Treasure Room
Added in AfterbirthItem Pool Key Master.png Key Master
Added in AfterbirthGreed mode onlyItem Pool Treasure Room.png Treasure Room
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Added in Afterbirth (page 3, column 15, line 4)
Removed in Afterbirth (page 4, column 5, line 2)
 
???'s Only Friend Complete the Boss Rush as ???
???'s Only Friend???'s Only Friend

???'s Only Friend is an unlockable passive item.

Effects[edit | edit source]

  • Gives Isaac a controllable follower that damages enemies on touch, dealing 2.5 damage per tick. Works similar to The Ludovico Technique The Ludovico Technique
    The Ludovico Technique Icon.pngInstead of firing tears, Isaac controls one floating tear that hover over obstacles. This tear deals constant damage when held in place over an enemy.
    and Robo-Baby 2.0 Robo-Baby 2.0
    Robo-Baby 2.0 Icon.pngFires lasers at any enemy in its line of sight and moves based on the direction Isaac is firing tears.
    .
  • This item belongs to the Beelzebub set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

Notes[edit | edit source]

  • Unlike The Ludovico Technique The Ludovico Technique
    The Ludovico Technique Icon.pngInstead of firing tears, Isaac controls one floating tear that hover over obstacles. This tear deals constant damage when held in place over an enemy.
    , you can't control it with your mouse if you enabled the mouse control in the config files.
  • Holding two opposite fire keys (both left and right or both up and down) at the same time will keep the familiar in place, while making Isaac fire in the direction of whichever fire key was pressed second.
    • This can help during combats with bosses who do not move a lot, as the familiar can continuously damage the boss when kept stationary.
    • On some keyboards, holding opposite fire keys may cause other keys to become unresponsive.


Interactions[edit | edit source]

  • BFFS! BFFS!
    BFFS! Icon.pngIncreases the size and damage of familiars.
    : Familiar is larger and does double damage.
  • Added in Afterbirth † Extension Cord Extension Cord
    Extension Cord Icon.pngBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
    : Familiar is occasionally connected to Isaac via electricity.

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PS4  Y4FW NYCX (First floor treasure room)

 PC  Normal mode only HC7F QZAT (Treasure Room adjacent to spawn)

 PC  Normal mode only J6S4 VMQM (Treasure Room adjacent to spawn)

 PC  Hard mode only 6CQZ CL2Y (Treasure Room adjacent to spawn)

 Switch  Greed mode only 6RS1 FT1H (First Golden Treasure Room)


Fly Items

Skatole Skatole
Skatole Icon.pngAll types of fly except Boom Fly and Red Boom Fly become passive and slowly move towards Isaac. Does not prevent contact damage.
Halo of Flies Halo of Flies
Halo of Flies Icon.pngSpawns two pretty fly familiars that block enemy shots and deal contact damage to enemies.
Distant Admiration Distant Admiration
Distant Admiration Icon.pngA red attack fly circles further out than the Halo of Flies / Pretty Flies, but closer than Forever Alone. Deals more damage than Forever Alone.
Forever Alone Forever Alone
Forever Alone Icon.pngSpawns a blue attack fly that orbits a long distance from Isaac.
Infestation Infestation
Infestation Icon.png1-3 Blue flies randomly spawn every time Isaac gets hit.
The Mulligan The Mulligan
The Mulligan Icon.pngTears have a 1/6 chance of spawning allied blue flies when they hit an enemy.
Hive Mind Hive Mind
Hive Mind Icon.pngIncreases the size of blue spiders and Blue Flies and doubles the amount of damage they deal.
Smart Fly Smart Fly
Smart Fly Icon.pngAfter Isaac takes damage, this fly will deal continuous touch damage to whatever enemy caused the damage until it is dead. The fly will then systematically attack 1 enemy at a time until the room is cleared.
BBF BBF
BBF Icon.pngSpawns a familiar that flies around the room in a manner similar to the Boom Fly and explodes on contact with an enemy. Respawns after ten seconds.
Best Bud Best Bud
Best Bud Icon.pngWhen hit, summons a white attack fly similar to Distant Admiration for the current room.
Big Fan Big Fan
Big Fan Icon.pngSpawns a large orbital familiar that blocks enemy projectiles and deals slight contact damage to enemies.
???'s Only Friend ???'s Only Friend
Blue Baby's Only Friend Icon.pngSummons a big attack fly that can be controlled with the shooting direction-keys.
Added in Afterbirth Friend Zone Friend Zone
Friend Zone Icon.pngA white orbiting fly which deals 3 contact damage per tick to enemies. This familiar orbits Isaac at a middle length distance somewhere between Distant Admiration and Forever Alone.
Added in Afterbirth Lost Fly Lost Fly
Lost Fly Icon.pngA familiar fly that moves in a straight line and attaches itself to the first obstacle or wall it comes into contact with in each room. If any enemies walk into its path, it will deal 7 contact damage per tick. If the obstacle it is attached to is destroyed then it will continue rolling in the direction it was previously travelling until it meets another wall or obstacle.
Added in Afterbirth Obsessed Fan Obsessed Fan
Obsessed Fan Icon.pngA purple fly familiar that follows Isaac's movements on a 3 second delay and deals contact damage to enemies.
Added in Afterbirth Papa Fly Papa Fly
Papa Fly Icon.pngA blue fly familiar follows Isaac's movements on a 3 second delay. Papa Fly will fire tears at nearby enemies.
Added in Afterbirth Jar of Flies Jar of Flies
Jar of Flies Icon.pngUnlimitedEvery time Isaac kills an enemy, a fly will be added to the jar, up to a maximum of 20. Using the Jar of Flies will release all the flies that are currently in the jar as friendly blue flies that will damage enemies.
Added in Afterbirth † Angry Fly Angry Fly
Angry Fly Icon.pngSpawns a fly familiar that orbits around a random enemy and deals 5 damage per tick to enemies it comes in contact with.
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