Robert Kristopher "Rob" Cesternino is a contestant from Survivor: The Amazon and Survivor: All-Stars. Considered "the smartest player to never win" at the time by Jeff Probst, Rob became popularized as a strong social competitor, introducing the strategy of "flip-flopping" on alliances while still maintaining many strong alliances that controlled the later-half of his time in The Amazon. Due to these actions, he could be considered the main antagonist of that particular season. He also taught "student" Matthew von Ertfelda about Survivor while on The Amazon. Ultimately, he fell a day short of the Final Tribal Council.