In the Hitman series, what is the codename of the main protagonist?

Agent 47

In "Frozen", who is Elsa’s younger sister? What color is represented by the last level of difficulty in Guitar Hero? Which 1980s home computer featured the videogame "Elite," a pioneering open-world space adventure? In literature, who was "The Old Man and the Sea" written by? Which special crown braided from branches symbolizes suffering worn during Easter events?