Painfully bright and even more stubborn, Luminescence has been incredibly independent from a young age. While they are initially trusting and open to any person they meet, once someone crosses the line, Lumi refuses to forgive them. They are very protective of others, make friends quickly, and lives to nourish those with the ability to make the world flourish. Specifically, their younger brother Spence.

After a traumatic expereince in their childhood, they grew to hate their father and furious with their mother for continuing to love him. This has created a divide between the two so stark that even after Lumi accepted their brother into their life, they still refuse to speak to her. They moved countries as soon as they were legally able, holidays are spent with friends and friends alone, and she only found out they were hospitalized when Spence mentioned it off-handedly. They originally wanted nothing to do with Spence either, but after spending some time with him they realized they shouldn't let their grudge affect someone who was in the position they were in when the trauamtic experience occured.

They are the definition of ride-or-die, but their choice of who they're loyal to is specifically their own and subject to change.