Out of the many heroes, anti-heroes and outright villains in The Walking Dead, there’s no one quite as likable as Glenn Rhee. The pizza delivery boy played by Steven Yeun is introduced in the very first episode of the show, and survives until its seventh season. During the series’ original run on AMC, Glenn quickly took his place among The Walking Dead’s most popular characters with viewers, and it was clear from his initial appearance in the series that he was going to be a hit.