Suddon's species were a humanoid species native to the Delta Quadrant. They were characterized by the feathers on the tops of their heads, and the feathers were a different color (or colors) for each individual.
Two members of the species, Suddon Blyth Conction Ulllma and Rando Setten Curlu, worked in a company in a sector dominated by businesses and created a computer virus that distributed ads. (VOY short story: "A Taste of Spam")