E.G. a sweeper,tank,wall.
I know that the B/W Blaziken is a Sweeper thanks to Speed Boost,but what is it's currently?
and is "Role" the correct term?
Blaziken's current role is still that of a sweeper. With such great Attack and Sp. Attack stats theres not much else he can be. There are ways to compensate for his relatively average speed though, such as a choice scarf set, a priority move such as vacuum wave, or a set up sweeper with agility.