Fiona Byrne

Fiona "Fi" Byrne was a good friend of J'onn J'onzz and fiancée of Manchester Black. She ran a group therapy session for aliens, which J'onn attended. However, she was later murdered by Agent Liberty.

Early life
Fiona grew up on the planet Ikthanol but, later in her life, she left because of hate crimes acted upon her people and travelled to Earth.

Engagement
At some point, Fiona met and fell in love with a man named Manchester in England and the two eventually got engaged.

Helping aliens in National City
Fiona later travelled to National City and started her own group therapy sessions for aliens. She later met J'onn J'onzz and the two became good friends.

At one of her sessions, she asked one of the new aliens what brought him to her session and he showed her that he was using an image inducer. She then explained that he wasn't the only one who had purchased one. Dr. Rohan Vose argued if aliens should attempt to change themselves just to be accepted. To finish off the session, Fiona simply stated that all aliens did the best that they could.

At the next session, no one showed up due to Dr. Vose being attacked by Otis and Mercy Graves. When J'onn showed up he asked if he had gotten the time wrong but Fiona explained what had happened. She then asked him to join her in forming a group to defend themselves against citizens who wouldn't support aliens but he denied. As the two were talking, a large object crashed through the side of the bar and the two managed to get innocents out of the way. After J'onn later spoke to Supergirl, Fiona approached him and asked if she was always that stubborn.

Death
Fiona was somehow kidnapped by Agent Liberty and woke up in his lair. She spotted Liberty and Mercy Graves watching a news report about President Marsdin being an alien. She then asked Liberty who he was and he responded by stabbing her in the back and exclaiming that he was an agent of liberty. She then slumped over in her chair, unconscious. She was later found by J'onn and Manchester, but quickly died soon after.

Powers

 * Empath physiology
 * Psychic abilities 
 * Telepathy