Truls Rohk is a character in The Voyage of the Jerle Shannara trilogy by Terry Brooks. He is a shape-shifter from the Eastland who accompanies the Druid Walker Boh to Parkasia on the airship Jerle Shannara. Truls possesses great agility, a formidable handle on magic, and superior instincts and survival skills. He is a logical, matter-of-fact person who is left broken and conflicted over his dual nature.