The Mysterious young Man is an article in Resident Evil Recollections. It was uploaded on 7 March 2016.
Wesker and Birkin are spying on Rebecca and Billy who've just made it to the Umbrella Training Facility, when suddenly a mysterious young man cuts in on their monitors. He declares to want to take revenge on Umbrella, directly threatening Wesker and Birkin as if he could see right through the monitors.
It's the same person we saw during the game intro near the Ecliptic Express, what could he want?
What will be the fate of Umbrella? He's got a good voice at any rate...