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Vyper is a Hero in Deadlock, released on January 17, 2025.

Gunner

Slippery

Rat-a-Tat

Weapon Stats
Damage Per Second:	94
Bullet Damage:	Hero Not Found+0.39+0.178
Ammo:	24
Bullets per sec:	14.3
Reload Time:	1.6s
Bullet Velocity:	412m/s
Light Melee:	Hero Not Found+2.7+1.58
Heavy Melee:	Hero Not Found+3.67
Crit Bonus Scale:	-30%

Vitality Stats
Health:	Hero Not Found+35+35
Health Regen:	2
Spirit Resist:	0+?%
Move Speed:	6.9m/sx0.0138
Sprint Speed:	1.6m/s
Dash Speed:	14.7m/s
Stamina:	4
Stamina Cooldown:	4.5s

Information

Release Date:	January 17, 2025

Vyper was added to Hero Labs as "Viper" on October 24, 2024.

Abilities

Vyper's Slither starts unlocked by default.

Throw a dagger, dealing spirit damage and applying slow.

Every subsequent dagger against the same target stacks in spirit damage and slow.

x0.8

50

Damage

On Hit:

-35%

Move Speed

On Stack:

x0.4

25

Damage per Stack

On Stack:

-15%

Move Speed per Stack

10s Stack Duration

3 Max Stacks

1

1 Charges

2

On Hit: -8% Bullet Resist and -6% Bullet Resist per Stack

5

+2 Max Stacks
-2s Charge Delay
On Hit: Refund 55% Charge Cooldown

Inject a target with lethal venom. After a delay the venom triggers, dealing Spirit Damage. The damage is increased by the target's missing health.

Lethal Venom will ignore Petrify's damage block.

x0.651

20

Minimum Venom Damage

x2.79

140

Max Venom Damage

30% Health for Max Damage

3s Venom Buildup Duration

1

31.5 Max Venom Damage

2

-40% Healing Reduction and -12s Cooldown

5

Bullets also build up Lethal Venom

You have increased Slide Distance, can Slide up hills, and can turn faster while Sliding.

15%

Slide Distance

1

+20% Slide Distance

2

+2 Stamina

5

On Slide: Gain 180 barrier for 5s

Notes

This ability also prevents the usage of movement abilities on hit for 6s.

Throw an explosive bola. On exploding, the bola Slows and Damages all enemies in the area.

Direct hits deal Additional Damage and Petrify instead. Petrified units block all damage, but cannot take actions.

Petrify

2.2s

Petrify Duration

x0.744

50

Damage

x2.05

180

Petrify Damage

50% Move Speed

1.5s Slow Duration

1

49.5 Petrify Damage

2

-20s Cooldown

5

+1s Petrify Duration. Petrifies all enemies in the area.

Weapon

The Rattler

Rapid Fire

Close Range

94 Damage Per Second

Falloff Range

15m ➞ 33m

Update History

Main article: Update history

View the full update history: Vyper/Update history

Update	Changes
August 12, 2026	Petrifying Bola radius increased from 8m to 12m. Petrifying Bola petrify duration increased from 2s to 2.2s.
June 30, 2026	Screwjab Dagger T3 now also reduces charge delay from 4s to 2s. Slither T3 spirit scaling increased from 0.6 to 0.8. Petrifying Bola cooldown increased from 90s to 105s. (Global ult change) Petrifying Bola T2 reduced from -25s Cooldown to -20s. (Global ult change)
May 22, 2026	Screwjab Dagger T2 bullet resist per stack changed from -5% to -6%. Screwjab Dagger T3 now also increases max stacks by 2.

Background

“

When it comes to breaking the law, not getting caught is a pretty important part of the job. Vyper never got that memo. Luckily for her, if there's one thing she's better at than getting arrested, it's escaping out of jail.
Having done time in every major prison in the tri-state area, Vyper has build an impressive network of street level lowlifes that owe her one. She's also built an impressive network of street level lowlifes that want her dead, but she tries to focus on the positive.

— A FATE'S TALE

Character interactions

Vyper thinks Jacob Lash is "awesome".^[1]
Vyper believes Infernus "used to be hard, but now he's just a bitch".^[2]
Vyper says her Screwjab Daggers are better than Shiv's Serrated Knives.

Gallery

Portrait
Match portrait
Minimap icon
In-game render
Model sheet
Weapon - The Rattler

Trivia

Vyper's current appearance is a modified version of Kali - another unreleased hero. Most of her in-game assets currently use Kali's.
Vyper's lead developer is Hopoo,^[3] best known as the co-creator of the Risk of Rain series.
Vyper hides her legs in her slide animation, making her look like a snake.
Vyper is the only hero who starts with an unlocked ability by default.

References

↑ Vyper's in-game voice line - "I'm just gonna say it: Lash is awesome, and he kicked Bebop's ass."
↑ Vyper's in-game voice line - "Infernus used to be hard, but now he's just a bitch, slinging Mary Pickfords to other bitches... Oh my god, don't tell him I said that."
↑ 2024-10-28 - Hopoo; Deadlock Discord - "yes I was lead on viper (and magician), it’s why neither was in the hero list previously"