Lore.

Cherub was a guardian angel, sent down to earth and assigned to a human named Alice. In her naivety, she allowed her human to die under her care via suicide. Thus, she was stripped of her angelic duties and had any holy influence revoked. She's only left with her halo and wings, now black as a constant and painful reminder of her failure as an angel. She turned to the internet for comfort, as her human had, and found a new home there.

Personality.

Cherub is cynical and quick to point out flaws, but has glimmers of true happiness and still feels a strong urge to carry out her purpose as a guardian angel. However, she's brainrotted from all her time spent on the internet.