Babram Marsk
From The Fool's Aftermath Wiki
Babram Marsk was a Kinemancer from the ancient past. He worked in the floating island above Mount Wadewick on the Potential of Infinity. He also created the Misspell Book. He documents his progress and life in a diary held by Kaladin Rakkan, El, and Mahilk Chad, where he records working with his apprentice Zane Blazebough.
His nickname given by Kaladin, El, and Mahilk is "Batman Marsh".