What unit is this?

[Pale_Horse]

The third pic could be a concept drawing for something in Ghost, or at least I hope so

 

[Sakuhta]

The 3rd is obviously just fan art...

 

[Darkmatter]

Night Templar? Could be. You never know since it is Blizzard that we are dealing with here.

 

[Renzokuken]

Lol only MrBret got it, the first one IS Tassadar, ignore the knife/sword, it's Tassadar, trust me. The second one hasn't loaded for my 56k, so i don't care about it The third one is wussy fanart which won't ever happen, and the fourth one is bear pwnage, which i condone!