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{{HeroTabs}}
{{Infobox hero
| key = hero_viper
| voice_actor = Stephanie Kerbis<ref name=":1" /><ref>[https://www.imdb.com/title/tt33268153/fullcredits/ Deadlock] on [https://www.imdb.com/ IMDb]</ref>
| release_date = January 17, 2025
| codenames = Viper, Kali
| pronouns = She/Her
}}{{Quotation
| 2 = Slide in, ''pop-pop'', hit Jezebel's up for an overpriced Manhattan to celebrate.|4=Viper_upgrade_power3_06.mp3
}}
'''Vyper''' is a [[Hero]] in ''[[Deadlock]]''. After '''[[Vyper#Slither|Slithering]]''' across the battlefield to swiftly avoid enemy attacks while spraying them with copious amount of bullets, Vyper can inject retreating foes with '''[[Vyper#Lethal Venom|Lethal Venom]]''' to finish them off and use her '''[[Vyper#Screwjab Dagger|Screwjab Dagger]]''' to hit faraway targets. By slinging her '''[[Vyper#Petrifying Bola|Petrifying Bola]]s''', Vyper will make sure that her targets won't get away from her.

Vyper is an impulsive outlaw that gets thrown in jail as many times as she escapes it, building a reputation among a number of criminal allies and enemies across the [[wikipedia:Tri-state_area|New Jersey Tri-State Area]].

Vyper was added to [[Hero Labs]] as "Viper" on [[Update:October 24, 2024|October 24, 2024]], and officially released on [[Update:January 17, 2025|January 17, 2025]].

== Weapon ==

{{WeaponCard|Vyper|ph=true}}

== Abilities ==

{{AbilitySection
| hero_name   = Vyper
| ability_num = 1
}}

{{AbilitySection
| hero_name   = Vyper
| ability_num = 2
|notes=
* T3 also [[Build-Up|builds up]] with [[Melee Attack|melee damage]].
* T3 has {{#invoke:Abilities|get_ability_upgrade_prop|Lethal Venom|3|BuildUpPerShot}}% build-up per bullet, affected by [[Damage Falloff]].
}}

{{AbilitySection
| hero_name   = Vyper
| ability_num = 3
|notes=* When Slithering up slopes, Vyper will not lose any speed as she would on flat ground.
* The T3 barrier has an 8 second cooldown before being able to be triggered again by subsequent slides, affected by cooldown reduction.}}

{{AbilitySection
| hero_name   = Vyper
| ability_num = 4
}}

== Street Brawl ==
=== Ability Changes ===
<!--For fresh data see [[Deadlock:Street Brawl Ability Changes]] -->
Apart from [[Street Brawl#Heroes|global changes]], Vyper does '''not''' have any special modifications for her abilities in Street Brawl.
=== Item Draft ===
{{HeroStreetBrawlItems|Vyper}}

== Backstory ==
{{Fates_Tale|viper}}

== Update history ==
{{Update history}}

== 3D model ==
{{3D_Model|Vyper}}
===Weapon===
{{3D Model|Vyper Weapon}}

== Gallery ==
<gallery>
File:Vyper card.png|Vyper portrait
File:Vyper.png|Vyper icon
File:Viper Render.png|Vyper in-game render
File:Vyper select background.png|Vyper select background
File:Vyper name.svg|Vyper name typography
File:Viper Reference Sheet.png|Vyper reference sheet
File:Vyper french.svg|Vyper's French typography
File:Vyper italian.svg|Vyper's Italian typography
File:Vyper polish.svg|Vyper's Polish typography
File:Vyper russian.svg|Vyper's Russian typography
File:Vyper schinese.svg|Vyper's Simplified Chinese typography
File:Vyper spanish.svg|Vyper's typography for Brazilian, Spanish, and Spanish-Latin America
File:Vyper turkish.svg|Vyper's Turkish typography
File:Vyper ukrainian.svg|Vyper's Ukrainian typography
File:Vyper Weapon.png|Vyper weapon - The Rattler
File:Four heroes update.jpg|Vyper in the January 2025 update art
File:Vyper card old.png|Previous Vyper portrait
File:Vyper vertical old psd.png|Previous Vyper match portrait
File:Vyper icon old.png|Previous Vyper icon
File:Vyper leak 1.png|Leaked work-in-progress new Vyper model
File:Vyper Gloat.png|Gloat portrait for Vyper.
File:Vyper Critical.png|Critical health portrait for Vyper.
</gallery>

== Trivia ==

* Vyper's current appearance is a modified version of ''[[Neon Prime]]'s'' {{HeroIcon|Kali}}. Vyper's files also replaced some of Kali's original files.
* Vyper's lead developer is [[Hopoo]],<ref>2024-10-28 - Hopoo; Deadlock Discord - "''yes I was lead on viper (and magician), it's why neither was in the hero list previously"''</ref> best known as the co-creator of the ''[[wikipedia:Risk_of_Rain_2|Risk of Rain]]'' series.
* A work-in-progress Vyper redesign model was leaked in May 2025. This model had a Cobra hood, a snake body instead of legs, no clothes, and a "WIP" sticker on the back.
** Ironically, real vipers don't have a hood.
* Before the [[Update:October 2, 2025|2025-10-02 Update]], Vyper was the only hero who started with an unlocked ability by default (Slither).
* According to her voice actress Stephanie Kerbis, Vyper is "not from Wisconsin or New Jersey".<ref name=":1">2025-09-04 - gammaton32 on [https://www.reddit.com/r/DeadlockTheGame/ reddit.com/r/DeadlockTheGame] - [https://www.reddit.com/r/DeadlockTheGame/comments/1n8qwaw/ Stephanie Kerbis is Vyper] (reposted from Stephanie's Tiktok)</ref>
* "Making [[wikipedia:Pruno|Pruno]] in the Hideout" is displayed as one's status in the in-game Friends List when playing as Vyper in the [[Hideout]].

== References ==
<references />

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