Originally Saint Phoenix, Head Rococo undergoes a transformative metamorphosis upon entering the "Mu'en Zone" and receiving divine protection. This evolution grants him the Koushichi Feathers, empowering him with enhanced abilities. These include breaking through demonic flames via "Sacred Firebird Speed" and aiding in the creation of a "Sacred Light Path". He leads the Wakajinshi group until his death at a critical juncture. In dying, he transfers his powers to Yamato Jintei, empowering him to become Yamato Bakushin and succeed as Wakajinshi leader. Later, the entities Seishin Nadia and Aizen Kaguya revive Head Rococo in a new form: Ando Rokoko.

In the "Bikkuriman World" video game, he serves as the player's protagonist, tasked by Super Zeus to defeat the antagonist Shiso Jura. He also features as a playable character in "Bikkuriman World: Gekitō Sei Senshi", which includes his transformation sequence. Further evolutions occur within the "Puzzle & Dragons" collaboration, involving fusions with characters like Echidna (resulting in forms such as "Echidna Rokoko" and "Crimson Lotus Mistress Echidna Rokoko") and a variant empowered by the Koushichi Feathers.

Official art collections document his visual design, reproducing original illustrations that showcase his distinctive linework and color schemes. Merchandise includes crystal art figurines depicting his likeness, commemorative stickers, and variant-colored figures. A specific anime episode references a "fully-scarred" iteration without providing narrative context. A manga titled "Ai no Senshi Head Rococo" exists, though its plot remains unspecified.