As stated before, 74 operators in total are present in both attack and defence. Each operator has unique abilites, weapons, and gadgets. You cannot pick and choose weapons on your operators, they have been selected already, but you can't take all of them. Gadgets like grenades and barbed wire also have this rule applied. They also have different speeds and health. An operator can have the following:

Each operator has a set speed and health, but future updates may change this. Personally, having a balanced health and speed is best. (e.g 2 speed 2 health) You can take more damage, whilst being able to freely move.

All operators can have an impact towards the game, from giving your teammates extra aid, to denying enemy entry or their abilites. I will list a few of the most picked/banned operators, with a personal ranking on them.

S Tier Attackers

Ace

Ace is one of the best attackers in the game, his ability is useful for pretty much every single site, and his loadout is deadly. He has:

Dokkaebi

Dokkaebi is another amazing operator, her loadout and ability can change the game:

Twitch

Twitch is my personal favorite operator in the game, whilst some people may argue she is A Tier. Most people agree she is an S Tier operator:

Ash

Ash is favored in the community, her agile playstyle makes her a loved character:

S Tier Defenders

Mute

Mute is my personal favorite defender, he is also considered the best defender in the game

Doc

Doc is a very valuable ally to have, he is the best operator for support

Mira

Mira is great for putting pressure on attackers, infact she currently is the most banned defender in ranked playlists

Bandit

Bandit is important for denying breaches with his ability