Negan is introduced to The Walking Dead as the leader of the Saviors, a ruthless group of survivors whom Rick and the gang have tussled with in the past. Negan is referred to only by name before he appears in person in the Season 6 finale with his barbed-wire-wrapped bat, Lucille, in hand. Already making an indelible impression on the series in his short scene in Season 6, Negan's grand entrance on The Walking Dead really comes in the Season 7 premiere, with him violently bludgeoning Abraham and Glenn (Steven Yeun) to death in arguably the show's most violent and heart-wrenching episode. After multiple clashes between the groups and their leaders, Rick (Andrew Lincoln) finally defeats Negan and, in an act of mercy, chooses to let him live rather than kill him, leading Negan to spend the majority of his remaining years imprisoned in Alexandria.