God

God is a powerful primordial being who created the universe and nearly everything it contains, including the human soul. Amara, his older sister, is the only entity surpassing his power, with the Horseman Death, prior to his demise, being comparable to him in power. Together, God and The Darkness serve as the balance in the Universe, as the dark cannot exist without the light and vice versa. If either one of them is lost or destroyed, existence itself would cease. His sister couldn't resist destroying whatever God created, so God created four archangels and, with them by his side, waged war against her and eventually locked her away with a mark which he entrusted to his most loved and valued angel, Lucifer. However, over time, after God created the Universe, the mark corrupted Lucifer and drew him to rebel when God created humankind.

Personality
Amara describes her brother as being prideful and egocentric, saying he created other things because he wanted to "be big". Although God admits this is true, he had also hoped to change her nature by showing her there could be things other than themselves, but he later deemed this as stupidity and naïveté on his part.

Despite his sister's claims that he encouraged religion, which she called "monuments to his ego", God often asks people not to refer to him as "God". He also stated that people bowing before him had always made him feel "deeply, deeply uncomfortable". When Metatron did this upon seeing his true form, God pulled him up and asked him not to do it again since it made him uncomfortable.

After billions of years of observing his creations and living among them, his disappointment caused God to become somewhat cynical. He considered human nature to be toxic and was willing to let Amara destroy everything seemingly out of spite against humans, for fighting wars in his name and then begging him to fix everything, and generally not taking responsibility for their failures. He also considers his creations to be experiments and also revealed that he abandoned the angels and humanity because they'd disappointed him. He later admits to Tsubaki that it's more than disappointment: while he'd once taken an active role in his creations' lives, he realized that he was hindering them more than anything and he needed to let them find their own way like a parent with their child. Despite everything that's happened since he did so, God believes he made the right decision.

It is also shown that despite his disappointment and cynicism, God truly does care for his creations deep down and it was just buried by the resentment he felt over how both humans and angels had failed him. After Metatron revealed the flaws of God's approach, God was able to finally take action in order to save the infected town from his sister. God even healed Lucifer of his injuries in their reunion, showing he forgave him.

Like Death, God seems to have a taste for what Tsubaki calls "cheap food". He also likes taking long showers. God was described by Metatron as "Larger than life, gruff, a bit of a sexist. But fair, eminently fair".

He has a humorous side as when asked by Metatron as to why he hid himself, he explained that he wanted to see everything while being in plain sight and admitted he enjoyed acting as a human to fool those around him.