Kallis the Dwarf Paladin is played by Brandon Marion.
Brandon's a former percussionist, former video game tester, and former human that is currently a digital artist and co-producer of "StabbyQuest." He operates solely on coffee beans and vividly recalls the first time seeing a visual interpretation of the apocalypse (Chrono Trigger - 1995 on SNES). It has stuck with him ever since. The beard upon his face is brutally gorgeous, and instantaneously causes violent weeping once seen by mortals who are not steadfast in their resolve.
Brandon can be found at instagram.com/brandobot3d.