Apex Legends Wiki
Yes, I've heard about criminals posing as Legends, and they're as derivative as they are pathetic. Take this prison break. I admit there are similarities to my modus operandi, but the cloud formations... that's where they went wrong. My gas wafts through the air as if dancing with death. Not like the spray of some hick fireman's two-decade-old extinguisher, as shown here. Anybody with a tenth of my brainpower can see this for what it is: amateurs playing dress-up in a desperate attempt to gain notoriety. But considering your banal, lackluster brand which you dare call 'journalism'? A tenth of my intellect is giving you far too much credit. Do you have any more questions that might illuminate your ignorance? Very well. Enjoy your day.[1]
Toxic Trapper
Real Name Alexander Maxwell Nox
Alias Dr. Mikhail Caustic[2]
Gender Male
Date of Birth February 25, 2685
Age 50
Homeworld Gaea
Class Controller Class Controller
Tactical Ability Nox Gas Trap Nox Gas Trap
Passive Ability Nox Vision Nox Vision
Ultimate Ability Nox Gas Grenade Nox Gas Grenade
Passive Perk Fortified Fortified
Real-world Info
Voice Actor JB Blanc

Caustic Icon Caustic is a Controller Controller Legend. He can be unlocked with either Legend Tokens 12,000, Apex Coins 750, or by purchasing the Champion Edition downloadable content.

Caustic is a deadly Legend with poisonous gas-based abilities. His tactical ability Nox Gas Trap Nox Gas Trap places canisters that fire out toxic gas when damaged or when an enemy comes near them. His passive ability Nox Vision Nox Vision highlights enemies that are in the gas. His ultimate ability Nox Gas Grenade Nox Gas Grenade throws a grenade that fires toxic gas in a large area around it.

Abilities[ | ]

Nox Gas Trap[ | ]

Nox Gas Trap Tactical Q/LB/L1/LB
Nox Gas Trap
Description Place up to 6 canisters that release deadly Nox gas when shot or triggered by enemies.
Cooldown 20 seconds

  • You can hold up to three charges of this ability, and gain one charge every 20 seconds. Up to six traps can be active on the map at once, and you're able to pick up unactivated traps to regain a charge.
  • When an enemy gets close to a trap, it releases a cloud of gas that deals damage per second to enemies caught within, ignoring shields.
    • A triggered trap lasts 11 seconds. After the barrel expires, the gas lingers for 2 additional seconds.
    • Each damage tick deals 5 damage to start, then ramps up by 1 every tick. (e.g. 5, 6, 7, etc.)
      • Each additional source of gas damage will only increase the DPS by 1.
      • On downed enemies, this damage rate stays at a flat 5/sec.
    • Bullets striking the top of a trap will also cause it to go off. However, shooting the base will destroy it without releasing gas.
    • Enemies will be slowed inside the gas after the first damage tick for 2 seconds and are unable to sprint. Squadmates aren't affected by this.
  • After being activated, the barrels have 150 HP, and the gas will linger for 2 seconds after the barrel is destroyed.
  • If a player is standing on top of an uninflated trap, it will not inflate until the player moves off of it.

  • Think of the traps as a short range throwable, and throw it like a short range grenade when needed. In heat of battle, an extra distraction for the enemy can be an extra help for you; they have to either shoot you or the gas trap.
    • This is especially helpful when an enemy squad is inside a building. They can be thrown inside through doorways and be very deadly if they are in a small space.
  • When outnumbered or in a sticky situation, throw multiple traps around you. The enemy's bullets will hit your traps, setting them off, and allowing you to escape or heal to stay in the fight.
  • You can use your traps as smoke bombs, to throw some cover for sniper fire or general confusion.
  • A squad that manages to get their Caustic to end game (such as Round 6 as it is almost done shrinking) will have the advantage over other squads that don't have a Caustic. Caustic's abilities increase in utility as the play area shrinks. Furthermore, Caustic can prevent scenarios of Heal Off Victories from happening as it's harder to heal in the gas and ring damage.
  • It's good to throw a trap in a smokescreen generated by a Bangalore's Smoke Launcher Smoke Launcher, especially if enemies are hiding in it. This will also highlight enemies in green due to Nox Vision Nox Vision, and allow you an unfettered view of the enemies.
  • When going through Wraith's Dimensional Rift Dimensional Rift portals, throw a trap at the end to catch enemies off guard trying to get your squad from behind and reveal their position due to your passive.
  • Throwing a trap in front of a door prevents it from opening to that side. You can use this to block doors and protect yourself, or to trap enemies inside an enclosed room. If they break down the door, the trap will activate and you’ll be informed of their location.
    • When Caustic is throwing a trap, shooting the trap before it activates completely will destroy it.
    • If it's deployed, remember to shoot the base of the trap before it activates will destroy it without releasing the gas.
    • If it's activated, destroying the trap will aloow the gas to disspate in 2 seconds.

  • If you throw the trap underneath you, there will still be a hitbox for the trap even though they do not inflate. This may be because traps used to be able to inflate on players, allowing them to sit inside it.
  • Throwing the trap under Lifeline's Care Package Care Package before it lands will cause the trap to slowly fly away.
  • Occasionally if you or a teammate touch a recently placed trap, It will begin to slide away.
  • Placing a gas trap right next to a closed-door when the player is right next to the door or when a trap is deploying next to a closed-door that is propped open causes the player located where the trap was deployed to be crushed.
  • Gas traps which are deployed on top of Gilbratar's Dome of Protection Dome of Protection will stay "floating" at their positions after the shield is gone.
  • Throwing a trap on the ground from a high height before the player hits the ground and landing on the trap can remove/reduce the fall stun, similar to Horizon's Spacewalk Spacewalk ability.

Nox Vision[ | ]

Nox Vision Passive
Nox Vision
Description You gain threat vision on enemies moving through your gas.

  • Caustic is immune to the effects of Nox Gas whether it belongs to him or an enemy Caustic.
  • Enemies inside the gas created from your Nox Gas Trap Nox Gas Traps and Nox Gas Grenade Nox Gas Grenades abilities are highlighted green, similar to Digital Threat Optics. This vision is obstructed by walls or other obstacles.

  • Your squadmates do not share this vision, so be sure to communicate to them the locations of enemies you can see.
  • Your threat vision doesn't work against other Caustics, forcing you to prioritize them, as they are immune to all Nox Gas effects and they can see your allies even if they are in your gas.

Nox Gas Grenade[ | ]

Nox Gas Grenade Ultimate Z/LB+RB/L1+R1/LB+RB
Nox Gas Grenade
Description Blankets a large area in Nox gas.
Charge time 3 minutes

  • Lasts 15 seconds.
  • Other than the wider area of effect, the gas's function is identical to that of Nox Gas Trap Nox Gas Traps.

  • The grenade can be shot down by Wattson's Interception Pylon Interception Pylon. However, if the grenade has already detonated, the pylon can't block any of the gas, and will even take damage from it.

  • Do not use Nox Gas Grenades and expect them to kill an entire squad. Similar to Bangalore's Rolling Thunder Rolling Thunder, its main utility comes in the fact that enemies are forced to either evacuate the area or suffer the consequences of damage, the inability to sprint and being highlighted by Nox Vision Nox Vision.
    • Since gas deals damage and slows enemies, use Nox Vision Nox Vision to hunt down and kill them while they are weakened. If you have Grenades, throw them into your gas when an enemy is caught-- this combo has the capability of wiping out full squads if enough players are caught in your gas.
  • Using this ability in large, open areas is often a waste. Try to save it for when enemies are occupying a building, a small area, or are hiding behind a cover too dangerous to bypass.
    • You can also use this ability to block chokepoints or cover/punish revives.
  • Try saving this for the last few rounds as his abilities increase in utility as the safe area shrinks. Furthermore, he can prevent scenarios of Heal Off Victories from happening as it's harder to heal in the gas and ring damage.

Fortified[ | ]

Fortified Perk
Description Incoming damage reduced by 15%. Not slowed by bullets.

  • Take 15% less damage from every attack, except headshots.

  • Don't overestimate this ability, 15% less generally translates to surviving 1 more shot.

Legend Upgrades[ | ]

Main article: Legend Upgrades

Legend Upgrades are special perks introduced in Season 20 to all Battle Royale modes. These add upgrades to a Legend's abilities as you level up your Evo Armor. Only one option may be chosen per level-up for a maximum of two perks total.

Level 2 Upgrades
Level 3 Upgrades
  • Particle Diffuser: +50% Nox Gas Grenade Nox Gas Grenade gas area of effect.
  • Breathe It In: Regen HP inside Nox Gas.

Lore[ | ]

Main article: Caustic (character)
Alexander Nox used to be one of the brightest scientists in the employ of Humbert Labs, the Frontier’s leading manufacturer of pesticide gases. Nox worked day and night developing new formulas for the glut of pesticides needed to protect the crops that sustained the Outlands. But he soon realized that progress was being hampered by his testing methods. He needed to test on more than just inert tissue: he needed living subjects.

As he toiled in secret, Nox began to see the beauty in his creations and their ability to destroy anything they touched. But the head of Humbert Labs soon discovered his gruesome experiments, and their confrontation ended with the lab in flames.

Now, competing under the name Caustic, he puts his gaseous creations to work in the Apex Games and observes their effects with great interest. However, as much as he's tried to leave his old self behind, the trappings of his former life are squeezing through the cracks. A cop obsessed with hunting him down; a loving mother who has discovered his death was faked; a bitter enemy revealed to be his half-brother; and an encroaching sickness he may no longer be able to evade. Who knows how long he will be able to avoid such confounding variables.

Cosmetic Items[ | ]

Skins[ | ]

There are a total of 86 Legend skins for Caustic; 3 Mythic, 29 Legendary, 14 epic, 26 Rare and 16 Common.


  1. Included in the Dark Humor Bundle.
  2. Included in the Silverback Bundle.

Story of Caustic:

  1. Blackheart: Alexander Nox denies involvement an infamous prison break on Gaia asserting the culprit was merely lookalike. However, the individual who corroborated his account can no longer be located.
  2. Necrosis: Caustic, sensing his death was imminent, at one point sought to become a Simulacrum. His project proposal was rejected after the results of his psychological exam proved troubling.

Finishers[ | ]

Main article: Finisher
  1. Can only be performed when Tier 3 of the Apex Contagion skin is equipped.

Heirloom Set[ | ]

Main article: Heirloom
Caustic Heirloom Set

Caustic's Heirloom Set

The set contains:

  • A Banner Pose: Hammer Time
  • A Melee weapon skin: Death Hammer - A hammer with a skull at the back equipped with Nox gas.
  • An Intro Quip: "I look forward to getting my hands on you."

Prestige Skin Set[ | ]

File:Caustic prestige skin.png

The set contains:

  • A skin set: Apex Contagion
    • Tier 1: instantly earned.
    • Tier 2: deal 30,000 damage with Caustic to obtain.
    • Tier 3: deal 100,000 damage with Caustic to obtain.
  • A finisher: Toxic Scream, unlocked at Tier 3. Can only be used while Tier 3 of Apex Contagion is equipped.

Badges[ | ]

Skydive Emotes[ | ]

Main article: Skydive Emote

Emotes[ | ]

Main article: Emote
  • Noxious Discovery - Crafting Metals 1,200
  • Take Notes - Crafting Metals 1,200
  • Celestial Sunrise Collection Event Reluctant Celebration
  • Veiled Collection Event Eau de Nox
  • Design Flaw - Crafting Metals 400
  • Season 12 Knockout Gas - Level 75
  • Sale Icon Waltz for One
  • Sale Icon Once More With Apathy
  • Sample Testing - Default

[ | ]

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Holosprays[ | ]

Main article: Holospray
  1. Included in the Silverback Bundle.

Music Packs[ | ]

Main article: Music Pack

Transitions[ | ]

Main article: Transition

Voice lines[ | ]

History[ | ]

Trivia[ | ]

  • For some reason, Caustic's eyes previously appeared to glow in the dark under certain circumstances. It is currently unknown why, but it could have had to do with his Nox Vision passive ability.
  • As explained by writer Tom Casiello, the Nox Gas is a corrosive gas, that eats through clothes, skin, and metal, unless countered by a chemical compound only he possesses so it doesn't affect him, which explains why the gas still affects Pathfinder, Bloodhound, Revenant, and Ash.
  • An inappropriate voice line between Caustic and Crypto was removed in the September 03, 2020 Patch; where Caustic says as thanks to Crypto, “You’ll regret the day you crossed me, gutter rat,” due to the word “rat” being a derogatory term towards Asians.[3]
  • During the 3rd Anniversary Collection Event 3rd Anniversary collection event, two skins were released based on Caustic's Blackheart skin - Golden Guardian for Gibraltar and No Chill for Revenant.

Gallery[ | ]


See Also[ | ]

References[ | ]