The fourth season of "The 100" will add two new characters, both of whom are surface people. One of them is named Hugo, a burly, aggressive guy in his 20s with the instinct of a natural leader. He feels deeply guilty for the atrocities he committed under the control of ALIE. Although Clarke defeated the artificial intelligence ALIE, he faced an unbeatable new enemy-the second destruction of the earth. Some people believe that the end of the world is coming, so they seek comfort from their loved ones; some people are unwilling to succumb to fate and vow to fight to the last moment; some people are tired of fighting and would rather do nothing; and some people decide to find someone to be a scapegoat. Clarke not only conflicts with the brainwashed followers of the City of Light, but also meets many new surface people, including Ilian (Chai Romruen)-he firmly believes that high technology is the main reason for the destruction of the earth again, and the sky people should be fully responsible for the reappearance of technology. He did some terrible things when he was controlled by ALIE, and he will try his best to ensure that those things will not happen again. Bellamy was very worried about Clarke. He told Clarke more than once: Don't take on everything yourself, let others share some of the responsibility with you.