The quadruped Orisa will be charging to the front lines of Overwatch from 21 March next week, when she launches as a character on all platforms. Described in a new ‘behind the scenes’ video as an Anchor Tank, her role will be a defensive one.
According to Orisa’s abilities page, she can “attack from long range, fortify her own defenses, launch graviton charges to slow and move enemies, and deploy a Supercharger to boost the damage output of multiple allies at once”. Blizzard say they wanted another character equivalent to Reinhardt in their duties.
Here’s the aforementioned Overwatch video, in which the designers talk a bit more about the development of Orisa.