Mathias

Sister Mathias is the director of social services at St. Philomena's Church in Worcester, Massachusetts. Due to the church being built over burial crypts, Sister Mathias has come across various restless spirits during her time at St. Philomena's, describing them as sad and harmless spirits who eventually are able to move on.

History
At some point in her life, due to the convent spiritual condition, she awakened her supernatural awareness. Shortly after Isabella's belongings transferred into her church because of unknown reasons, he met Isabella (which unknowingly tethered with her potrait that packed along her other belongings) and befriended her. However, one day, she felt something strange that hidden away by Isabella. Later, she learned the real, bitter truth about Isabella after she read her journal. Sister Mathias realized there was a connection between Isabella and the murders and learned of what she did from her journal and alerted Sam and Dean. As Dean and Sister Mathias hunted for Isabella, they witnessed that Isabella possessed and murdered the local priest, which she angry that he forgave people for their sins and she later possessed Sister Mathias in attempt to kill Dean. As she tried to stab him, Sam learned of her blood and finger being used in the painting and salted and burned it, forcing Isabella from Sister Mathias. Isabella begged her friend to help her, but Sister Mathias did nothing and Isabella burned up as the painting was destroyed.

Powers and Abilities
Although she never received any training in supernatural knowledge, due to the convent spiritual condition and capabled to adapt with it, at least she awakened her supernatural awareness.
 * Basic Supernatural Awareness - She capable to aware about the presence of any supernatural things such as Ghosts, Poltergeists, and even various restless spirits in the convent. She also capable to directly contact them if needed. However she did it secretly.