They are Belisarius Cawl, Kelbor-Hal, Zagreus Kane, Arkhan Land, and Oud Oudia Raskian.
This fan movie has some decent voice acting in it and I think the music is spot on.
Iron Within is an upcoming animation project about two Imperial Guard troopers. This page has some preview renders of the protagonists and their enemies.
Plague Marines, a Demon Prince, and more Nurgly goodness vs Ravenwing and Deathwing.
A collection of posts on how to magnetize various Titans as well as the Command Terminals.