User blog comment:CROWMETA13/Can Lucifer beat darkness?/@comment-27737882-20160416181628/@comment-34326521-20160416183011

She's not evil. She's angry because her own brother locked her up to create the universe as he desired. I know I'd be angry if my own family imprisoned me because I didn't agree with their opinion of how things should be and then did things their way.

The reason most people - including viewers - think she's evil is because she wants to destroy the universe (and kill God, after getting him to acknowledge his wrongdoings). However, they intentionally leave out an important bit: she's going to take every sentient being (besides the angels) along with her and create a new, blissful universe. Essentially, she's going to create Heaven on Earth (a new Earth, but you get the point).