Tristan

Tristan is the Nephilim of Mariel, the wife of Lucifer Morningstar. While it is known his mother and father were murdered for conceiving a Nephilim by Lucifer, Tristan's whereabouts are unknown.

Personality
It is mentioned that Tristan is kind and shy. He cares about his younger sister, Hailey, deeply as he has travelled across the universe barrier to reach her and bring her home.

Appearance
Tristan supposedly has white hair and blue eyes.

Biography
Tristan was born to Mariel, the Angel of Music, and an unnamed human man, who his mother supposedly fell in love with. When his mother fled Heaven and hid on Earth, she raised Tristan with her lover.

Plot
Tristan was mentioned by Hailey in the fight against Lucifer.

He later appeared to Hailey while she was being tortured by Luci and Mini Morningstar. He provided her with the spell she unknowingly used in her fight against Lucifer, which sent her to another world.

Trivia

 * Tristan is speculated to be the man who released Hailey from her cage during her imprisonment.
 * He was conceived before Hailey, making him her older brother, if not by much.
 * Tristan, despite his human heritage, has an infinite lifespan.