Unlike Cyandog, the thunder on the forehead is missing, replaced by a yellow cross. Also, he has spiky, doglike ears and metallic designs. His power fell, however his parts are way more accurate to make up this.
In the games
In Medarot 2
Iwanoi has Cyandog instead of Bluesdog, since Bluesdog is a generic enemy here. In the Metabee version he is used by Sakekaasu as one of his three Medarots.
In the anime