According to Raww Le Klueze, global admin of the Suikosource forums, there are three unused sprites found in the PC version that appear to be part of an unused Blue Gate summon or something similar. The three sprites are supposed to appear in different spots on the screen which would explain why they are looking in different directions.

To support that idea, in the Gensou Suikoden II 108 Stars Character Guide (published only in Japan by Konami), within a section detailing a scrapped idea to summon spirits of other elements, there are a few characters resembling the three unused sprites if they were mixed together.