Top 10 Rainbow Six Siege Operators

Fantastic operator with a simple but very versatile gadget. I love being able to swap to the shotgun quickly if I run out of ammo or am being pushed.
Being able to create kill holes from below or above the objective is devastating for the defenders. Chuck a couple of grenades into the mix, and you have one of the best operators you can play!
An all-rounder who can engage enemies from multiple angles. He is extremely versatile thanks to his fully automatic rifle, shotgun, and handgun.
When most ops can only carry two types of weapons at one time, he carries three.

Besides Hibana, who can create small holes, Thermite is the only operator who can blow up a big hole through reinforced walls. Thermite is crucial to winning. It is possible without him, but it is easier with him.
So far, as I've used him, I think he is a really effective operator in R6 because you can fully attack the objective without heading in yourself.
Yet, he is kind of crappy if they have a Bandit.
Thermite's Exothermic Charges are almost essential for the attacking team if they want to get somewhere.

The rifle shield is perfect for peeking around corners and not being picked off.
You don't understand how many times I have regretted peeking this guy while on defense.

Castle's Armor Panels can easily change the game due to their high defense.
She is one of the best ops in the game because:
1. Her weapons are amazing.
2. Her gadget is really good and versatile, with concussion mines that detonate in proximity to defenders, and her impact grenades are really helpful for opening up lines of sight.
3. She is thick.
My favorite operator and main. By far the best operator in the game.
No recoil M762 and useful gadgets that can destroy walls and concuss other operators.
Ash is a fast, agile, light tank. As long as you know how to use her, you'll be getting 3+ kills almost every attacking round. She has a breaching charge that you can fire from safety, instead of placing a breaching round from close quarters and possibly getting killed.
She's quiet, too. The enemy will barely know you're coming, and once it's too late for them, you'll already be in the objective. Ash has two deadly and, in my opinion, the best weapons in the game. If you are a rushing, one-man army killing machine, then Ash is your number one go-to person.
I just started using Frost, and she is starting to become my main operator other than Cav. Frost's traps help sometimes, but they mostly help against shield operators because all they do is crouch and walk very slowly.
Also, her gun is overpowered.
Weapons are fun to use, the ability is simple to learn, and the operator is useful to the team.
When traps are placed correctly, it is nearly impossible to enter the objective.
Best defender for new players. Great operator with high win rates.
She should be in the top 10 because her guns are amazing. A long or mid-range rifle combined with an SMG is amazing.
It is beautiful, and combined with Thermite's breach, it makes her amazing.
Hibana allows the team to hard breach from a distance. She is a better Thermite as she can do this from a distance.
She is the perfect mix of Ash and Thermite, who are already two of the best operators in the game.
The Newcomers
You really can't run any hard breacher without Thatcher. If for some reason you don't, the enemy Bandit or Mute will seriously mess you up. Plus, the grenades work through walls.
And he can take claymores. Enough said.
Best attacker for beginners. Still good for advanced players.
If you time his hammer well with his shotgun, it can be a winning combination.
Picks Fuze on hostage. Gets kicked from the game.
He is the lord and savior of Siege. Also, his rework is going to make him super powerful.
The best Defender for intel. Her cameras can be thrown at any surface and are hard to spot if the attacking team forgot to pick IQ. Although the TTK is unreliable versus 3-armor attackers, her MPX has no recoil at all, making it easier to spray for headshots and engage targets in long corridors.
Also, her Nitro Cell is great for denying incursions from windows and breached surfaces.
Best defender in the game for obvious reasons.
I get many spawn peeks with Jager. It's fun making people rage quit. Give me my ACOG back.
The C7E is amazing. His weapons make him a tank (AR, SMG, and a shotgun), and the fact that he can track opponents makes him the best operator in the game.
2-speed, 2-armor is definitely my favorite, and Jackal has that.
Good weapons and his skill are perfect for making opponents struggle.
When interrogated, it reveals the opponent's location, and they never see it coming.
He can stop drones, which helps a lot with shock drones.
Super underrated. Love this operator so much!
I love his drones and everything about him!