While playing as Tainted ???, bomb pickups are replaced by poop pickups, and his bomb counter is replaced by a poop counter which displays the number and effects of his poops. The order in which different types of poop are obtained is predetermined based on the seed. By default, Tainted ??? can carry a maximum of 10 poops: 9 in the poop counter and 1 in Hold.
Using Hold will store his leftmost poop for later use and cycle to the next poop.
Besides replacing bomb pickups, poop pickups also have a chance to drop from fallen enemies and by Tainted ??? by dealing damage. There are small and large variants of poop pickups: small poop pickups give one poop, and large poop pickups give three poops.
Tainted ??? can acquire the following effects from poop pickups. These effects are the same as IBS, but are not used immediately.
All thrown poops deal 15 damage to enemies they hit when thrown (up to 3 times in the case of stone poop).
A normal Poop, the same as those found in any run.
Spawns a blue fly every two seconds. Each corn poop can have up to 3 blue flies out at a time.
Leaves behind a fire that damages enemies and blocks enemy shots. The fire lasts 5 seconds and can block five shots and/or deal three ticks of contact damage before disappearing (the first hit will deal 16.5 damage, the second and third will deal 11).
Emits a toxic cloud that deals 3.5 damage per tick to nearby enemies (10.5 damage per second). If an explosion or fire hits the cloud, it also explodes, dealing 15 damage to anything caught in the blast. When the poop is destroyed, it spawns a larger toxic cloud that can't explode and goes away after 5 seconds.
Continuously creates slowing black creep and, when destroyed, deals 10 damage to and confuses all enemies in the room. The poop will continue to create slowing creep even after it's destroyed.
Acts the same as a poop created by Hallowed Ground. Tainted ??? also gains the poop's effects while holding it.
Very resistant to damage and deals extra damage when thrown.
Explodes after 1.5 seconds even if Tainted ??? doesn't throw it. This bomb looks like one created by Butt Bombs, but will not have its unique effect. It will, however, use most of Tainted ???'s bomb synergies except for Mr. Mega, Rocket in a Jar, Ring Cap and Short Fuse.
Deals 5 damage and poisoning nearby enemies while pushing them and their bullets back and spawning a toxic cloud. If an explosion or fire hits the cloud, it also explodes, dealing 15 damage to anything caught in the blast. Reflected bullets can damage enemies, similarly to Butter Bean.
Drops 5 live bombs over time, similarly to the Explosive Diarrhea pill. These bombs will use Tainted ???'s bomb synergies.
Create a trail of brown creep that deals 1.5x Tainted ???'s damage to enemies per tick (15x Tainted ???'s damage per second). Standing on this creep gives Tainted ??? +1 damage, +1.5 tears fired per second, and other effects, depending on what's in contact with it. This creep persists indefinitely. When in contact with:
Black Poop: the creep also slows enemies and gives Tainted ??? slowing tears.
Toxic cloud from Stinky poop: the creep poisons enemies and gives Tainted ??? poison tears.
Flaming Poop: the creep burns enemies and gives Tainted ??? Fire Mind.
White Poop & its Aura: the creep grants homing and triples Tainted ???'s fire rate and damage
Stone Poop: the creep will keep all the extra effects of other poops, even if they are destroyed, as long as the Stone Poop is not destroyed.
Most items that affect bomb count will spawn blue flies when playing as Tainted ???. For example, 2 of Clubs and Boom! will spawn 2 and 10 flies respectively.
However, Bombs are Key pills seem to give Tainted ??? bombs internally (assuming he had keys before using the pill), as using the pill again will give back the amount of keys that were originally carried. When bombs are obtained this way, they can be given to Bomb Bums, though you will be unable to see how many you currently have, and they cannot be used for anything else.
Troll bombs will not appear at all while playing as Tainted ???; they too will be replaced by poop pickups.
Items/effects that reroll pickups (such as D20, GB Bug, etc.) will also reroll poop pickups.
In Co-Op, partners can pick up poop drops if they're alive and still add them to Tainted ???'s reserve.
In Co-Op, a bomb counter will be displayed if one of the characters is not Tainted ???, despite him not usually being able to see it.
In Co-Op, Tainted ??? can infinitely use Bomb Bums without taking away bombs from the other player's reserves.
Tainted ??? is unable to give poop pickups to Bomb Bums in place of bombs.
Tainted ???'s tears are coloured brown; this is purely cosmetic.
Tainted ???'s special poops have exclusive interactions with Dirty Mind.
As Tainted ??? begins with a low tears stat, it is almost required to rely on poops in the early game. The player should not be scared to use poops as Tainted ??? will naturally create many poops as he deals damage, especially in boss battles. However, it may be best to save more powerful poops or poop synergies, such as White Poops and brown creep, for more difficult situations such as boss battles.
Tainted ???'s low tears also makes tears up items like Torn Photo very beneficial.
More than any other type of poop, it can be beneficial to use Hold on bomb poops for utility purposes, such as finding secret rooms or reaching pickups behind rocks.
Alternatively, flaming poops can be used in conjunction with stinky poops/farts to blow things up without using bombs. The stinky poop/fart can be used next to what the player wants to blow up, then the flaming poop can be thrown at it to create an explosion. This can also be done by throwing stinky poops at a fire or flaming poop, though care must be taken as it is easy to get caught in the ensuing explosion if the player does not move out of the way quickly enough.
As with most other fires, flaming poops can kill shopkeepers without the need for a Butt Bomb or another stinky poop.
If playing in Greed Mode, it's best to try to complete all waves in one sitting as exiting the main room will cause all poops and creep to disappear.
Almost anything that resembles a fire can cause toxic clouds created by farts and Stinky Poop to explode. This includes Fireplaces, fires shot by enemies (such as Candlers, Fire Worms, and Revenants), and fires created by Tainted ??? (such as with The Candle, Ghost Pepper, and Bird's Eye). Extra caution must be taken to stay away from gas clouds if playing with or around fires.
Stinky Poops can intentionally be thrown at blue/purple fireplaces to blow them up for the chance to gain soul hearts. Be careful not to destroy Angel statues next to them if they’re in an Angel Room and you do not wish to fight the angel.
Birthright allows Tainted ??? to hold up to 29 poops in the poop counter.
Petrified Poop does not increase the drop rate of pickups from generated poops.
Items that break obstacles such asBob's Rotten Head, Mr. Boom orNotched Axe lets Tainted ??? break open tinted rocks, secret rooms and other obstacles without needing to save a bomb poop.
The Candle/Red Candle allows T. ??? to ignite gas at will and from a safe distance, making him less reliant on poop bombs and explosive diarrhea.
Mom's Bracelet allows Tainted ??? to pick up the poop and put it in a different spot (e.g. putting white poop in favorable spot to fight a boss.)
Dirty Mind generates dip familiars from all generated poops. It also generates unique dip familiars if Tainted ??? destroys the 3 new poops: Stone Dip, Stinky Dip, and the Flaming Dip.
Rock Bottom is extremely strong with Tainted ???, allowing him to permanently gain the stat increases gained from standing in his Brown Creep and White Poop auras.
Tech.5 patches up Tainted ???'s low fire rate, as the technology laser fires around 2.5 times a second.
With Bird's Eye or Ghost Pepper, the explosion might be very hard to avoid if your current poop is farting, since farting guarantees to spawn fire. The only surefire way to not harm yourself using a fart is to move in one direction constantly while farting.
Finger! will harm special poops whenever it's pointed at them, forcing the player to take special care to not look or turn to the poop to avoid weakening them accidentally.
Items that directly add Red Hearts to the health bar, such as Yum Heart, Yuck Heart or full health pills, are useless. However eternal hearts still act as an extra half a heart and become a full soul heart at the end of the floor making Prayer Card viable.
Guppy's Paw, since requiring Red Hearts to convert, would be a useless item to hold (but should still be picked up and swapped back to get credit towards the Guppy transformation). Guppy's Paw may still be used to activate Broken Remote.
After death, the bowels of the deceased will loosen, causing them to defecate themselves. This is probably why Tainted ??? has a heavy focus on poop.
When Tainted ??? dies, he will drop all of his stored poop pickups behind him, an in-game depiction of the above.
Additionally, with the amount of poop in the general area of the face, and the fact that ??? is the corpse of Isaac, this heavily implies that Isaac ate his own poop whilst suffocating inside of the chest.
When Tainted ??? has an item that makes him fire red/blood tears, his normally brown poo tears become black. This is likely because that's the color of feces that's mixed with blood from internal bleeding.
The achievement for unlocking Tainted ??? is "The Soiled", a possible title for the character.
Soiled means dirty, which likely references how dirty Tainted ??? looks due to being covered in poop.
Charming Poop, Tainted ???'s Mega Satan unlock, is the only poop type in the game that requires unlocking.
Tainted ???'s transition screen portrait.
Using Genesis will give Tainted ??? a second Hold in the active item slot.