Make Sonic The Hedgehog's archnemesis a part of your holidays with this Dr. Eggman Christmas tree ornament. Dr. Ivo "Eggman" Robotnik may not achieve world domination—thanks to Sonic—but he will revel in all the attention he receives as a part of your seasonal decor in his classic rotund style with his red and yellow jacket and abundant mustache that extends nearly as broad as himself.