Just a heads up for those who did play Dungeon Master, and are looking to make Grimrock as nostalgic an experience as possible; An upcoming patch has been confirmed to allow custom portraits.
There are already fan made tools to do it yourself (also requiring photoshop skills), and for those willing to try now, or those willing to wait for the patch:
The whole Dungeon Master: Hall of Champions, updated for Grimrock use, courtesy of AngryMeteor.
