Season 1
S1.E1 ∙ Air: Part 1S1.E2 ∙ Air: Part 2S1.E3 ∙ Air: Part 3S1.E4 ∙ DarknessS1.E5 ∙ LightS1.E6 ∙ WaterS1.E7 ∙ EarthS1.E8 ∙ TimeS1.E9 ∙ LifeS1.E10 ∙ JusticeS1.E11 ∙ SpaceS1.E12 ∙ DividedS1.E13 ∙ FaithS1.E14 ∙ HumanS1.E15 ∙ LostS1.E16 ∙ SabotageS1.E17 ∙ PainS1.E18 ∙ SubversionS1.E19 ∙ Incursion: Part 1S1.E20 ∙ Incursion: Part 2
