for picture #2: the artist is D. L. Taylor, also known as liquidd. didn't find an email adress, but some online profiles, where it should be possible to contact him.
link 1: liquidd profile at elfwood. he didn't login in over a year :(
http://www.elfwood.com/art/d/t/dtaylor/profile.html
link 2: probably the better choice. no clue when he loged in last time, but one month ago he added a new picture.
http://liquidd-1.deviantart.com/
if mojko or theultramage intend to use the picture, they can ask nicely there.
btw: D.L.Taylor has loads of good pictures. i think it would be really worth it to ask him for permission.