Cyrus/Anime/Main series

Cyrus debuted in Losing Its Lustrous! and Double Team Turnover!, along with Mars, Jupiter, and Saturn. It was revealed that he is a rich businessman who made most of the buildings and libraries throughout Sinnoh. However, at the time, and  did not know that he is also the Team Galactic leader. Using his businessman alter-ego, he visited the Celestic Town Historical Research Center while the remaining members of Team Galactic carried out a plan to steal the Lustrous Orb from the Research Center, after having already stolen the Adamant Orb from its Eterna City police escort.

He discovered that and  saw  and, respectively, when the two recalled their encounters with them at Lake Verity and Lake Valor; this apparently intrigued him.

In Saving the World From Ruins!, Cyrus was seen in Team Galactic's headquarters alongside Saturn and Jupiter as well as Charon. They were coordinating Mars's mission on Iron Island and using a beam launched with the Spear Key to scan energy readings from the Spear Pillar. However, Mars's machine was destroyed when the scan had reached only 60%, presumably ruining their mission. Despite this, Cyrus did not appear to be discouraged.

Towards the end of Unlocking the Red Chain of Events!, Cyrus requested J's services in capturing, Mesprit, and Azelf. In The Needs of the Three!, he watched J's mission from Team Galactic's headquarters alongside Charon. Later, he supervised Charon's experiment to bring the captured under their control and revealed himself as Team Galactic's boss to Ash, Dawn, and  when they teleported into the laboratory. In The Battle Finale of Legend!, he took control of and, and stepped into a portal created by the two Legendary Pokémon. The portal was soon destroyed, leaving Cyrus's fate unknown; however, it is implied that the dimension was destroyed by Dialga and Palkia.

He appeared briefly in Memories are Made of Bliss! in 's fantasy with all the other members of Team Galactic.