Summary
Rudy Gillen is a criminologist and one of Tenma’s former classmates who played a crucial role in his life by securing Tenma’s freedom from arrest and gathering intelligence on Johan from various criminals the latter had encountered. His dedication to uncovering the truth extended to helping Nina recover her memories, a mission that ultimately put his own life in grave danger. Although he possesses deep insight into Johan’s modus operandi, the doctor remains completely baffled by Johan’s actions despite his extensive knowledge. A former student of Dr. Reichwein, Gillen first appears in Chapter 33.
