Preceptor Appelbaum is a teacher at the Ghost Academy with a reputation for always being unhappy. They helped uneducated student Delta Emblock learn how to read.[1]


"Baum" is the German word for tree.


  1. DeCandido, Keith R. A. (w), Fernando Heinz Furukawa (p, i). StarCraft: Ghost Academy: Volume 1 (paperback binding). Tokyopop, January 1, 2010. ISBN 978-1427-81612-2.
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