As the release of the game approaches, Capcom has released the SFV Character Introduction Series. Each video tells a description of each character, including brief story, skills and trigger, showcase, along with why we should play with each character.
Each character offers different advantages for gamers. For example, while Necalli is a good fighter for beginners in SF games, Nash has more attack variations than any other fighter in the game, perhaps for advanced gamers.
So far, Capcom has released videos of four fighters, but expect more every day on Capcom Fighters at YouTube.
Nash
Necalli
Zangief
Ken
[Source]: Capcom Fighters (YouTube).