Watch The 100 S03e07 1 Now

: The episode confirms that the "spirit of the Commander" passed down through generations is actually the ALIE 2.0 AI chip. Titus removes the chip from the back of Lexa's neck immediately after her death.

: In a moment that sparked significant fan backlash, Commander Lexa is accidentally shot and killed by her advisor, Titus , while he was attempting to assassinate Clarke. Before dying, she makes Titus promise to protect Clarke. Watch The 100 S03E07 1

: Flashbacks to 97 years prior reveal that a scientist named Becca created ALIE 2.0 , an AI designed to interface biologically with humans to ensure survival. After Earth was destroyed by ALIE 1.0, Becca fled to the ground from the 13th space station, Polaris , becoming the first Commander. : The episode confirms that the "spirit of