|First Apperance||Chapter 72|
Mikiya Sadamasu (貞升 ミキヤ, Sadamasu Mikiya) is a mirror character introduced in third part of story.
Chapter 71-185 (Third Season)
Mikiya first appeared at Chapter 73, he is choose as one of the 30 players to be play at Real Account Tower.
During Real Account GO game, Mikiya calls all players to do a summon event in order to make people easily get the Pocket Monsters. When Daiki Kujima are try to steal Yuuma Mukai's Pocket Monster, Mikiya stopped Daiki due to he believed this might be a trap. After seeing how Yuuma handle the summon event, Mikiya is glad that Yuuma wanted to handled the event and believed he will be become a good leader. Shortly, Mikiya was killed by Planning Department Chief Marble by absorbed all of his smartphone's battery life.
- During Mikiya's first appearance in original Japanese scan of Chapter 72, his last name in kanji was mistakenly written as "貞枡" (The pronunciation of the last name is still same as the current one). However, in the Volume releases of the chapter was fixed his last name issue.