They are portrayed by starring cast members Eliza Taylor and Bob Morley , and debut in the first episode of season one. Their co-partnership started in the fourth episode of Season One and a friendship developed in the eighth episode of season one. The relationship between Clarke Griffin and Bellamy Blake starts out antagonistic towards each other. In the beginning, Bellamy shows a great amount of animosity towards Clarke and considers her to be one of the "privileged" in the hierarchy the Ark created. Meanwhile, Clarke often disagrees with the decisions Bellamy makes. However, as season one goes on, their relationship develops into a partnership.