The newest 'Dota 2' shoutcaster is Valve boss Gabe Newell
 

Gabe Newell is a lot of things to a lot of people: PC gaming's greatest gift; the man who knows how Half-life 3 ends; reclusive sous-vide aficionado. And now he's an in-game announcer in Dota 2. If you pick up the new Mega-Kills Announcer Pack as par...

https://www.engadget.com/2018/08/22/...a-2-announcer/