Gustus was a recurring character in the second season of The 100. He was portrayed by Aleks Paunovic and debuted in Fog of War. Gustus was a close confidant of Lexa's and was killed after trying to break up the alliance between the Grounders and the Sky People because he believed it would lead to Lexa's death. He showed incredible strength while being executed, telling Lexa to be strong even as she was forced to execute him.