The Deathbird

Millions of years ago, "The Mad One", also known as Ialdabaoth or God, took over the earth in a sort of cosmic lawsuit.

Now, the world is coming to an end and Nathan Stack, the latest incarnation of a long line of humans going back to Lilith's husband, is revived by Snake (aka Dira) after spending 250 thousand years in an underground crypt to make the journey to the mountain where God lives.

He is the only human capable of confronting him and putting the Earth out of its misery through the summoning of what is referred to as the Deathbird.

In one such story, his mother is partially paralyzed and suffering from cancer which will eventually, slowly and painfully, travel to her heart.

She eventually convinces him to inject her with a lethal substance in a hypodermic needle, killing her and ending her pain.