donaldson's first appearance on "survivor" was in the second season, "". after being placed on the tribe ogakor, he quickly formed a bond with fellow castaways amber brkich, jerri manthey, and mitchell olson. however, he acted as the swing vote between the alliance between olson, manthey, and brkich and the alliance between tina wesson and keith famie. donaldson ended up siding with wesson and famie in the decision to eliminate olson. after the tribes merged, donaldson joined the rest of ogakor in systematically eliminating the former members of the rival tribe, kucha. colby was also a force to be reckoned with during the post merge phase, winning five individual immunity challenges in a row and three reward challenges.