Which Agent in Valorant Can Deploy a Toxic Gas Barrier?

Updated: 14th July 2025 2 min read

In Valorant, the agent renowned for deploying a toxic gas barrier is Viper. As one of the original agents in Riot Games’ tactical shooter, Viper’s kit revolves around chemical warfare, area denial, and vision control.

Her signature ability, Toxic Screen, is a game-changer on both attack and defense, enabling teams to block sightlines, execute site takes, and stall enemy advances with a wall of poisonous gas.

How Viper’s Toxic Gas Barrier Work

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Toxic Screen (E)

  • Ability Type: Vision Blocker
  • How It Works: Viper equips a device that fires a long line of gas emitters, which can pierce through terrain and cover large stretches of the map.
  • Activation: Once placed, Viper can activate the emitters to raise a tall wall of toxic gas, obscuring vision and damaging enemies who pass through it.
  • Resource: The wall consumes Viper’s fuel while active, requiring careful management for sustained use.

Tactical Uses:

  • Cutting off enemy sightlines during site executes.
  • Denying information and splitting defending teams.
  • Creating safe passages or isolating duels.

Viper’s Full Ability Kit

AbilityDescription
Snake Bite (C)Fires a canister that creates a pool of acid, damaging and slowing enemies.
Poison Cloud (Q)Deploys a gas emitter that creates a toxic smoke cloud when activated.
Toxic Screen (E)Deploys a line of gas emitters to create a toxic gas wall (barrier).
Viper’s Pit (X)Ultimate: Creates a massive toxic cloud that reduces enemy vision and max health inside it.

Why Viper’s Toxic Screen Matters

Viper’s Toxic Screen is unique among Valorant’s controllers. Unlike traditional smoke grenades, her barrier can span entire sites, bend around corners, and persist for extended periods as long as she has fuel. The wall not only blocks vision but also inflicts the “decay” status on enemies, temporarily reducing their health as they pass through.

This makes Viper a staple pick for maps that benefit from long, segmented sightlines or require creative site control. Her toxic gas barrier is a defining feature that shapes strategies at all levels of play.

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Conclusion

Viper is the only agent in Valorant who can deploy a toxic gas barrier, thanks to her signature ability, Toxic Screen. Her mastery of chemical warfare and area denial makes her a formidable controller, capable of shaping the battlefield with a single, well-placed wall of poison.

Written by:

Christian