Skip to content
All heroes
Overwatch 2TankStalwartTakes practice

Sigma

The celebrated astrophysicist Siebren de Kuiper's life changed forever when a failed experiment gave him the ability to control gravity but splintered his mind. Now, he struggles to maintain his connection to reality, unaware that Talon is manipulating him to their own ends.

Tier
B
Win rate
50.0%
Change
0.0
Pick rate
10.8%
Ban rate
3.8%
Main guideComplete guideData-driven
Sigma guide

How to play Sigma: abilities with their keys, perks, Stadium powers and how Sigma does in competitive, from Blizzard's official stats.

BalancedUtility
Read the guide

Abilities

  • LMBHyperspheresLaunch two charges which implode after a short duration, dealing damage in an area.
  • ShiftKinetic Grasp12sAbsorb projectiles in front of you and convert them into extra health.
  • EAccretion10sGather a mass of debris and throw it at an enemy to knock them down.
  • RMBExperimental Barrier1sHold to propel a floating barrier; release to stop. Press again to recall the barrier to you.
  • QGravitic FluxUltimateManipulate gravity to lift enemies into the air and slam them back down.

Sigma's perks and Stadium powers

Perks →

During a match you unlock a minor perk and, later, a major perk: you pick one of the two each time.

Minor perk

Kinetic CycleKinetic GraspAbsorbing projectiles with Kinetic Grasp also reduces Accretion's cooldown.
Hyper RegenerationExperimental Barrier30% of Hyperspheres' damage restores Experimental Barrier's health.

Major perk

Hyper StrikeHyperspheresEvery 5 direct hits with Hyperspheres, your next successful Quick Melee levitates and knocks away enemies.
LevitationActivate and hold Double Jump to briefly levitate upward.

Stadium powers

12 powers to choose from; in Stadium you pick up to four over the match.

Kinetic Grasp

  • Symphonic SyzygyWhen Kinetic Grasp ends, for every 50 damage absorbed gain 10% Attack Speed for 4s, stacking up to 4 times.

Experimental Barrier

  • Event HorizonDamage absorbed by Kinetic Grasp grants Overhealth to visible allies and restores Experimental Barrier's health. Excess is converted to Overhealth.
  • Philharmonic FortitudeExperimental Barrier has 25% increased Max Health. Barrier health regenerates constantly but 50% slower while deployed.
  • Orbital BarrierGet a mini Experimental Barrier that orbits around you. It has 50% reduced health.
  • Mass DriverAccretion projectiles that pass through Experimental Barrier gain 300% Projectile Speed, deal 25% increased damage, and restore 150 Experimental Barrier health.

Accretion

  • SingularityAccretion splash damage is increased by 75% and enemies are pulled towards its explosion. Accretion's cooldown is reduced by 35% on direct hit.

Hyperspheres

  • HyperloopHyperspheres direct hits reduce the cooldown of Accretion by 0.8s.
  • Apogee AlignmentWhen you use an ability, create 2 Hyperspheres that orbit around you that deals 75% damage.

Gravitic Flux

  • Maestro50% Ultimate Cost Reduction. Gravitic Flux Radius is reduced by 35% and refunds 50% of Ultimate Charge if no enemies are affected.

General

  • Zero GravityWhen you use an ability or Gadget, gain the ability to fly for 2.5s.
  • TrinisphereYour primary fire launches a third Hypersphere that deals 50% damage.
  • AstrophysicalAbility: Quick Melee causes enemies hit to levitate into the air for 1s. (10s Cooldown).

From the guide «Sigma guide»

Sigma · Tank

Sigma · recommended perks

Patch Season 4
BalancedRecommended

One minor and one major perk, chosen by what each one's text adds to a tank hero. Blizzard doesn't publish how often each perk is picked, so this is a reading of the perks, not a pick rate.

Sigma · Tank

Sigma · Stadium

Patch Season 4
BalancedStadium

Four of the 12 Stadium powers of Sigma, chosen by what their text adds to a tank hero and spread over different abilities so no single one carries the build.

Sigma · Tank

Sigma · alternative perks

Patch Season 4
UtilitySituational

The other option of each perk level. Perks are chosen during the match, so switch to these when the enemy composition or the map asks for what they do.

Story

Location
The Hague, Netherlands (formerly), International Space Station (formerly)
Birthday
Mar 15
Age
64
Scientist

De Kuiper was considered a pioneer in his field. His life's work involved devising a way to harness the power of gravity. Equally known for his groundbreaking research and eccentric personality, he conducted most of his studies from his lab in The Hague. Believing that he was close to achieving his goal, he performed his most important experiment on an international space station. But something went wrong, triggering the brief formation of a black hole. De Kuiper was only exposed to its power for a moment, but he suffered serious psychological damage. The area around him began to experience strange fluctuations in gravity, peaking and dropping in time with his reactions. He had to be evacuated immediately.

Subject sigma

Upon returning to Earth, De Kuiper was quarantined in a secret government facility. Between his ravings about the patterns of the universe, the nonlinear nature of time, and the gravitic anomalies happening around him, he was deemed unsafe and detained for years under the name "Subject Sigma." Isolated and unable to control his powers, De Kuiper retreated into his own mind. He thought he would never see the outside world again. When Talon discovered De Kuiper's existence, they sent Reaper, Sombra, and ultimately, Widowmaker, to infiltrate the facility and break him out, planning to use his brilliance and research to further their plans. In their custody, De Kuiper slowly gained control of his powers. Now, gravity moved according to his will, and he was closer than ever to achieving his life's goal. But the same experiment that had opened his mind had also fractured it, and he struggled to keep the pieces together. De Kuiper continues to develop his powers in hopes of unlocking the secrets of the universe, unaware that Talon is using both him and his research.

Reign of talon

With Talon under Vendetta’s rule, Sigma has been thrown into containment. Per Vendetta, he is no human, but a volatile weapon—and should be treated as such. Until she has need of such a tool, Sigma remains confined, holding out hope that one day someone might free him from this torment.

Hero