Geil Rugner (ゲイル・ルーグナー Geiru Rūgunā), born Georg Rugner (ゲオルグ・ルーグナー Georugu Rūgunā), is a character mentioned in Suikoden. He was the immediate predecessor as Emperor of the Scarlet Moon Empire before Barbarosa Rugner.
Geil Rugner was born the eldest son of Kallnach Rugner and thus, the seemingly obvious choice as the new Emperor once his father died. However, on Kallnach's deathbed, he chose Geil's younger brother, Michelan as his successor.
When Michelan passed away, it appeared the emperorship would fall to Michelan's son, Barbarosa. However, Geil used his influence in the courts to have Barbarosa stripped of the crown while he was away in Kunan. Geil was then crowned Emperor of the Scarlet Moon Empire. The War of Succession broke out soon after.
Although Geil seemed well backed during the war, having a mixture of generals and administrators, including Bergen, Schmidt, Assam and Kreutz, the latter of which considered to be the greatest of Geil's generals, he decided to enact a brutal rule in an attempt to secure his power, losing him the support of the populace. Meanwhile, Barbarosa managed to gather his own impressive followers, including the six Great Generals and within a year, the war was over. Geil Rugner made one final stand at Gregminster but was cut down and killed by Barbarosa himself.
- Geil was born Georg Rugner but later changed his name to Geil as it was considered more favourable from an astrological perspective. Close friends still sometimes called him Georg, however.
- Gensosuikoden Genso Shinsho Vol. 9 2002 Summer Issue (ISBN 4-7753-0088-1), page 79
- Gensosuikoden Kiwami Encyclopedia, page 51