Have nothing to show yet, cause I need to decide on which skeleton to base the Grahls on before.
1) First thought was the Giants, but after looking at their animations, especially their combat animations, I not so sure anymore. Giants attack with a huge wooden club and though that club could easily be removed, it still would look kinda odd. The Grahls have long tusks and large claws, so imo a beast that is clawing its opponent would make more sense. What you think?
2) Bloodmoon's vanilla Grahls were made of ice only. Not sure if due to the concept or lazyness of the texture guys. I would like to change that and mix skin with ice, where the iced parts would be the dominant ones. I liked the Grahls from that designer, which were showcased in the abandoned Grahl-thread, but I of course don't want to just reproduce his work.
http://rosskimballgameartist.wordpress.com/character-work/grahl-project/#
Vanilla Grahl:
http://www.uesp.net/wiki/File:BM-creature-grahl-1.jpg

You can use the troll
You can use the troll skeleton, its very similar in anatomy.