Sky Scout, known as Birdman in the Japanese version, is a winged warrior who guards the power generator in the second alternate dimension that Jaden Yuki and his companions visit. He possesses the world view that high-Level monsters are superior to those of lower Level, and have the right to abuse them. After suffering a defeat to Jaden, he ultimately dies (in the dub, his energy is sent to the stars), but not after regretting his past actions and asking Jaden to save his world. He mentioned The Supreme King, implying that he already ruled that dimension.
In Yu-Gi-Oh! GX episode 02929: "Doomsday Duel, Part 1", a silhouette of one of the Shadow Riders strongly resembles Sky Scout, but makes no further appearances.