Taron Egerton acted as Edward `` Mad Teddy '' Smith in the movie Legend .
Egerton has also starred in several biopics , portraying Edward Brittain in the drama Testament of Youth ( 2014 ) , Mad Teddy in the crime thriller Legend ( 2015 ) , Eddie `` The Eagle '' Edwards in the sports film Eddie the Eagle ( 2016 ) , and Elton John in the musical Rocketman ( 2019 ) .