ATTENTION: The character is subject to a generational evolution between Overwatch 1 (2016-2022) and Overwatch 2. The icons of the previous generation could indicate the disappearance of the voice lines from the game.
🛡️Tank
With Doomfist
Enemy doomfist
💀Kill: Hoge bomen vangen veel wind. – High trees catch a lot of wind.
With Orisa
This must be the robot of which Akande speaks so highly. Such ingenious design!
Tell him to deliver his compliments in person.
With Sigma
Enemy Sigma
💀Kill: Ah… Schrödinger’s me?
With Winston
❓In Overwatch 1 Sigma’s interaction was present, but Winston’s answer came in Overwatch 2;
Do you ever miss it? The moon?
Sometimes. But there’s nothing there for me now.
Winston ally
🤗Compliments: Ha! Give Dr. Winston my regards.
🎥Cinematic Recall;
🤗Compliments: Your father will be proud.
Enemy Winston (OW1)
💀Kill: Give Dr. Winston my regards.
🎥Cinematic Recall;
💀Kill: (Laugh) Nu komt de aap uit de mouw. – The monkey is out of the bag.
Enemy Winston
💀Kill: Like father, like son.
With Wrecking Ball
Remarkable! The subject weaponizes momentum through geometrical navigation.
The subject appears to be piloting the device. It may be worth observing further.
The subject reminds you he is sitting right here.
Stop making the hamster sound boring.
Enemy Wrecking ball
💀Kill: An experiment, failed.
📒Stort Story Thoughtless Gods;
With Zarya
Is it true you share an interest in the study of gravity?
I shoot black holes at people I don’t like.
Ah! Applied science!
Enemy Zarya (OW1)
💀Kill: The Tobelsteins’ work remains flawed. (Sighs) Tragic.
Enemy Zarya
💀Kill: Gravity kills.
⚔️Damage
With Cassidy
An American cow hand? Has this dimension shifted timescales?
That’s right, big man. It’s the 1880s all over again.
Remarkable! How far are we from Bonn? I’d like to meet Heinrich Hertz.
💬Heinrich Rudolf Hertz, German physicist (1857-1894);
🤝COMBOS WITH ULT
Oh! Where has everyone gone?
Don’t worry, big man. We took care of ’em.
With Freja
That cape… it utilizes mag-lev technology, yes?
That’s right. Good eye.
Ah, there is no greater joy than to see one’s invention help the world.
📙Overwatch Declassified: An Overwatch History (2023) – It was Sigma who invented the magnetic levitation technology;
Sure. Just don’t worry about what I’m using it for.
With Junkrat
Enemy Junkrat
[👕Galactic Emperor] 💀Kill: You could have been my Infinite Jester.
With Mei
Enemy mei (OW1)
💀Kill: You’re just a scientist.
With Reaper
What a strange and fascinating molecular makeup. It could be worth examining.
No thank you.
With Sombra
Hm? Ah, there you are, my friend!
What, are you surprised to see me?
Well, it is not unlike you to disappear without warning!
Someone has to keep you from wandering off.
🤝COMBOS WITH ULT
Magnificent electromagnetism!
You were pretty magnificent yourself, Doc.
Sombra ally
🤗Compliments: A devious execution, my friend!
🛟Resque: I’ll look out for you, my friend!
Enemy Sombra
💀Kill ➔ 🫥Stealth: All will be revealed.
☄️Accretion + 💀Kill ➔ 🫥Stealth: Invisible object, unstoppable force.
With Symmetra
Your work is to be admired! Form and function, working in harmony.
Form is vital to function. The two are inseparable, like movement and music.
Ah, well… perhaps I will take your word for it.
With Tracer
You were lost to time… tell me: do you hear it, too?
Well… I got a bit of a ring in my ears, I guess!
Can’t you make it out? The faintest, maddening melody_?
(Nervous Laugh) We should really stay focused.
Enemy tracer
💀Kill: Caught in the Slipstream.
🎞️Video Tracer Origin’s Story;
💀Kill ➔ 💫Recall: Spacetime restored to normalitye.
With Widowmaker
I saw you at Luna’s Cabaret the other evening. Would you care to go together sometime?
🌍Map Paris;
I prefer to attend events alone.
Apologies. I wouldn’t wish to intrude.
Widowmaker ally
🤗Compliments: Your precision is… unnatural.
Enemy widowmaker
💀Kill ➔ 🦘Grappling Hook: Goodness, I had no idea you could fly.
❤️🩹Support
With Lifeweaver
Self-propagating biomass? A deadly weapon in the wrong hands.
No need to fear. I won’t sell my biolight to anyone.
We never plan for our creations to escape our control.
With Lúcio
That music… could the volume be increased?
Really? You’re a fan of my tunes?
Of course! They are delightfully… distracting.
With Mercy
Doctor, are we still meeting for lunch after the seminar today?
Siebren, that was years and years ago. But we had a lovely talk.
Oh, I remember now. Birds, wasn’t it? Birds and music.
Enemy Mercy
💀Kill: A fallen angel.
With Moira
Can one know that one knows nothing?
💬 Socrates, Greek philosopher (470 – 399 BC) / 🔍I know that I know nothing;
Can a single grain of sand differentiate between heap and not-heap?
If the universe is a simulation, why aren’t there more elephant seals?
It thrills me to put aside my preparations and humor your brilliant inquiries, Doctor. It thrills me.
Kind words. Thank you!
In the field, Doctor? Testing a hypothesis, perhaps?
With the rate at which our colleagues get injured, I expect I’ll be testing my patience.
Remind me: what is the purpose of the experiment ahead?
We expose an addled subject to stressors and observe the results.
Oh. Perhaps I’ll wait for your report.
Moira ally (OW1)
🤗Compliments: Always nice to see a colleague at work.
🤗Compliments: Ingenious work, Doctor!
Moira ally
🛟Resque: Careful, Doctor!
Enemy Moira (OW1)
💀Kill: Poor practices.
Enemy Moira
💀Kill: Schoenmaker blijf bij je leest. – A shoemaker must not go beyond her last.
With Zenyatta
How does this omnic defy gravity? No repulsors are to be detected!
I owe my gifts to the Iris.
Oh, the Iris, of course! We’ve met.
How… fortunate for you.
👥Various Heroes
If you know what you’re looking for, inquiry is unnecessary. But if you don’t know, how do you inquire?
Mei: Well, maybe you know a little bit, and you keep asking questions until you figure it out!
Junkrat: Ah. Zeno’s Paradox!
Moira: (Sigh) Somehow even more tiresome than the chicken and the egg.
Allies
👕👟Skins with Shoes + 🔁Return to Battle: It would be more comfortable if these feet could breathe.
enemies
💀Kill ➔ 🛑🏃Movement Abilities: The event horizon is ineludible.
💀Kill ➔ 🛑🏃Movement Abilities: Prediction, or anticipation?
☄️Accretion + 💀Kill ➔ 🪽Enemy in Flight: Earth meets sky!
☄️Accretion + 💀Kill ➔ 🪽Enemy in Flight: Re-enter the atmosphere!
☄️Accretion + 💀Kill ➔ 🛑🏃Movement Abilities: Counter-argument: a boulder.
☄️Accretion + 💀Kill ➔🛑💥Ultimate: Ultimately, a rock.
☄️Accretion + 💀Kill ➔ 🎯Long Distance: Death has travelled lightyears to take you!
👕👟Skins with Shoes + 🤘Kill Streak: Superlative arch support!
🔁🤘Return to Battle after Kill Streak: Science rarely rewards overconfidence.
[👕Galactic Emperor] 💀Kill ➔ 🛑💥Ultimate: Infinitely punished.
[👕IGalactic Emperor]🩸Low Health + 💀Kill: Most go through life unchallenged, except at the final moment.
[👕Galactic Emperor] 💀Kill ➔ 
⚙️Incomplete voice lines
The following voice lines were originally introduced into the game without the question or response of the heroes involved in Sigma’s interactions. They were later removed, and over time some of them have been returned in full. The interactions are organized between those who start (🗣️❓) and those who respond (🗣️❗);
🗣️❓Mei: Dr. Zhou. I’ve read your work. It’s brilliant.
🗣️❓Zarya: You are a very strong woman. But gravity is stronger.
🗣️❓Moira: Dr. O’Deorain, the main components have gone missing. Do you know where they might be?
🗣️❓
Unknown: I would like to study the peculiarities of your condition. Perhaps we could find a way to stabilize them!
🗣️❓Unknown: You are an anomaly with immeasurable potential. What is there to cure?
🗣️❓Unknown: Do you ever miss it? Being out in space?
🗣️❗Unknown: Oh, apologies. (Laughs) That’s your job, isn’t it?
🗣️❗Unknown: Possibly. All things are potentially possible, but with enough time? I think so.
🗣️❗Unknown: States of being are interchangeable. Time is an illusion.