|“||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.|
|Real Name||Dr. Alexander Maxwell Nox|
|Alias||Dr. Mikhail Caustic|
|Date of Birth||Feb 25, 2685|
|Tactical Ability||Nox Gas Trap|
|Passive Ability||Nox Vision|
|Ultimate Ability||Nox Gas Grenade|
|Voice Actor||JB Blanc|
Caustic is a Defensive Legend with a slower playstyle, as he excels in holding a position and breaking down enemy attacks. His Nox Gas Traps and Nox Gas Grenades damage and slow enemies while highlighting them for him with his Nox Vision, giving him and his squad opportunities to wipe them out in the ensuing chaos.
Nox Gas Trap
|Nox Gas Trap|
|Description||Place up to 6 canisters that release deadly Nox gas when shot or triggered by enemies.|
- You can hold up to three charges of this ability, and gain one charge every 25 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 5 Health damage per second to enemies caught within, ignoring shields.
- 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 and are unable to sprint. Squadmates aren't affected by this.
- If one trap affects an enemy it will deal 5 damage per second. Nox Gas Grenades and any other traps affecting the same enemy will only deal 1 additional damage e.g. if three are activated at the same time they will do 5-7 damage per second.
- The traps can be destroyed while midair or before they're fully inflated.
- The traps can float away when thrown in moving water.
|Description||You gain threat vision on enemies moving though your gas.|
Nox Gas Grenade
|Nox Gas Grenade|
|Description||Blankets a large area in Nox gas.|
|Charge time||3.5 minutes|
- Deals 5 damage per second spent in the gas.
- Other than the wider area of effect, the gas's function is identical to that of Nox Gas Traps.
- You can also use this ability to block chokepoints or cover/punish revives.
|Description||Incoming damage reduced by 15%. Not slowed by bullets.|
- Take 15% less damage from every attack.
- Immunity to slow effects from weapon fire.
Alexander Maxwell Nox was born to Arthur Rutherford Nox and Katerina Ticacek Nox on February 25, 2685. He worked as a research scientist for Humbert Labs on his homeworld Gaea, the Frontier's leading manufacturer of pesticide gases. With a glut of pesticides needed to protect the growing Frontier colonies’ crops, Humbert Labs was constantly on the hunt for better and stronger formulas. Nox was one of their brightest scientists and worked day and night developing new gases. But to make sure they worked, he needed to test them on more than just inert tissue: he needed something living.
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, Dr. Franklin Humbert, soon discovered his gruesome experiments, and their confrontation ended with the lab in flames and its chief dead in 2723. Today, Nox is missing and presumed deceased, his supposed body found and identified by his mother, charred and beyond recognition. 10 years later, Caustic now finds new test subjects in the Apex Games, where he puts his gaseous creations to work and observes their effects with great interest.
There are a total of 66 Legend skins for Caustic; 19 Legendary, 8 Epic, 23 Rare and 16 Common.
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."
- His global identification number on Gaea is: ARN0-225P-ER9.
- When he registered in the Apex Games as a competitor, he utilized the name "Dr. Mikhail Caustic".
- His alias' bio stated he was born in 2690, educated and graduated in 2715, received his Ph.D. in 2720, and won the Heinrich Hammond Award for Excellence in Science on Psamathe in 2725, before doing a sabbatical in Solace.
- Despite using an alias in the Apex games, Jacob Young (syndicate's Director of PR) refers to him as "Nox".
- The case file on Gaea indicated Caustic is diagnosed by multiple medical practitioners as a medically confirmed psychopath.
- This, or possibly other psychological issues, resulted in the rejection of his self-applied application for being turned into a simulacrum.
- Caustic has cancer at a stage that he himself considers as incurable. Before the confirmation in the "Legacy Antigen", it had been hinted through a voice line, where he says he has faced his death, right before going into a hacking fit.
- Although not visible due to his gloves, Caustic is likely missing at least two fingers. On his death record, the examiner states that two severed fingers were found near to the left hand of the corpse and matched Nox's DNA.
- For some reason, Caustic's eyes appear to glow in the dark. It is currently unknown why but could have to do with his Nox Vision passive ability.
- In the discussion getting Revenant into the Apex Games, Caustic was discussed as having gone soft since some girl joined the games, most likely Wattson. 
- 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, and Revenant. Because that is the case, it is unknown why he needs his gas mask, though it is likely to hide his identity as he is presumed dead. 
- His gas contains agatoxins from Carthage Spiders, a mammoth class arachnid found on Gaea that emits toxic gas from its abdomen. The Agatoxin is similar to the Medusa virus.
- According to Manny Hagopian, Caustic's name was originally supposed to be "Alexander Gaskins" based on the serial killer Donald Henry Gaskins. It was changed to "Nox" after it was pointed out that "Gaskin" has the word "gas" in it and Manny agreed it felt weird.
- 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 racial slur towards Asians.
Death report for Alexander Nox. of Caustic.
Early concept art of Caustic.
Concept art of Caustic.
Model of Caustic's head, showing his face.
Concept art of the Nox Gas Traps.
- Caustic Loading Screen Text "Blackheart's Rage"
- From Pathfinder's Quest, chapter 9
- Death Certificate
- Caustic Profile
- Story from the Outlands: Fight Night
- From Pathfinder's Quest, chapter 9
- Pathfinder's Quest, chapter 9
- Manny Hagopian on Twitter
- Prog Wang on Artstation
- Kejun Wang on Artstation
- William Cho on Artstation
- Danny Gardner on Artstation