Blizzard unveils the gravity-controlling Sigma as Overwatch’s latest hero

Sigma is Overwatch's new hero.

Blizzard Entertainment, developers and publishers of the popular team-based multiplayer first-person shooter game, have unveiled their 31st hero in a teaser trailer posted online.

Of Sigma, Blizzard Entertainment says: "The 31st Overwatch hero, Sigma is a kind and brilliant scientist who has been irreparably changed by an experiment gone wrong, gaining the ability to manipulate gravity in the process.

"During that tragic experiment, Sigma sustained serious psychological damage, deemed a threat to humanity and locked away for years in a secret government facility. He was eventually freed by Talon and used as a living weapon."

[embed]https://www.youtube.com/watch?v=onplsJSdp4A[/embed]

It comes after it was revealed Overwatch is set to make big matchmaking changes with the introduction of a "Role Queue".

"Currently in Quick Play and Competitive Play, a lot of important decision-making happens in the 40 seconds before a match even begins, as everyone selects their heroes and responds to others' role choices," the company explained in a statement.

[embed]https://www.youtube.com/watch?v=BHsfF9q1mVs[/embed]

"It's not uncommon for players — who may all have different goals and play styles — to feel tension, pressure, disappointment, or even hostility as a team composition comes together. The Role Queue system is designed to help take the edge off this process, ultimately leading to matches that feel fairer and more fun, where players are in roles that they want to be in."