Galienna is a resident of Soleanna in Sonic the Hedgehog (2006). She is an average civilian who lives in Castle Town and can be found hanging around on the street. She appears to be an over-emotional, nervous citizen who is easily surprised, with a slight sense of paranoia.
In Sonic's story, Galienna gives Sonic his second Town Mission. All of a sudden, Badniks have invaded Castle Town with the apparent intention of finding something. Galienna requests Sonic to destroy these robots and save the town from destruction.