Filia is a dragon priestess who help lina in Slayer TRY
A priestess of the Gold Dragons, Her initial mission is to gather a team of heroes to prevent the prophecy of darkness from becoming a reality. Initially hoping for the help of Luna Inverse, whom she believed was the most powerful sorceress in the land, She was somewhat disappointed to be turned down. Instead, Luna referred Filia to her younger sister, Lina Inverse.
Filia is very tempermental. While she usually sports a quiet, dignified appearance, it isn't hard to get Filia enraged. At such times her dragon's tail tends to pop out. Filia also keeps a rather large, and heavy, mace strapped to her right leg just for the purpose of 'punishing people who irritate her. Some people have an easier time annoying Filia than others Xellos, for example, can often get Filia riled up just by smiling at her. Filia's horrified to learn that Lina keeps association with Mazoku. Filia's instinctive reaction to Xelloss is to curse him and call him raw garbage. For some reason, this slanderous euphemism works surprisingly well. Filia seems to think that her opinion is the only correct one, and that only those who agree with her are making sense. She will listen to intelligently-delivered alternatives, but for the most part once she makes a decision, that's the one that should be adhered to- in her opinion. However, some of this seeming arrogance really has to do with her vast naivete.