Repost from long time ago, I think D:

Welp, here goes nothing. From Top to bottom:

JC Denton, Laura Croft, Gordon Freeman, Adam Jensen
Chell, John Marston, (Adult) Link, Shepard (female)
Shephard (male), Solid Snake, Cloud Strife, and Nathan "Nate" Drake

from

Deus Ex, Laura Croft series, Half-life series, Deux Ex Human Revolution
Portal series, Red Dead Redemption, Legend of Zelda series, Mass Effect series
Mass Effect series (duh), Metal Gear Solid series, FF7, and Uncharted series.

Yes, that was unnecessary. I know, I shouldn't do it again D: