Tveit was good in the movie but he was not perfect casting. If you have read the full edition of Victor Hugo's novel, Enjolras was considered as someone who was liked the sun god Apollo of Greek (or Roman?) mythology. His golden looks and his charisma drew the students to his idealism and his magnetism as the student leader for the ABC Society.
No offense meant, but that was not very apparent in Tveit's personality as leader of the group.
