Director David Yates said no one else was even considered for the role of the 1920s 'magizoologist', reported Contactmusic.
"Eddie is quintessentially British, and an actor for all times, who can play a character from any time," the "Harry Potter" filmmaker said.
"Eddie is brilliant at getting under a character's skin and exploring every detail of a role, yet all that effort is invisible. All you see here is Newt, an outsider who is somewhat knotty but winning and engaging, someone you immediately invest in.