Season 1 Episode 1: Pilotthe 100 :

: A protective older brother who stowed away on the dropship to protect his sister, Octavia.

: The son of the Ark's Chancellor, who is initially ostracized by the other teens. Themes and Tone PilotThe 100 : Season 1 Episode 1

You can find more detailed episode guides and reviews on platforms like TV Guide or Rotten Tomatoes . : A protective older brother who stowed away

: The episode ends with the shocking realization that they are not alone; a mysterious spear is thrown at one of the teens, Jasper, signaling the presence of "Grounders." Core Characters Introduced considered "expendable" by the Ark's laws

: 100 teenagers, considered "expendable" by the Ark's laws, are dropped into Earth’s atmosphere in a crude dropship.