Whatever religious beliefs you subscribe to, you probably have an image in your mind about what God looks like. Even atheists have a mental picture that they can conjure when the topic comes up. Do you see God as an all-knowing, all-loving man in the clouds? What about as a supercomputer who is using you to test out a math equation, or a Japanese high school student who created the world and might destroy it out of boredom?
If you answered one of the latter two, you're probably an anime fan. That's because anime has its own unique ways of portraying God. What does God look like in different anime? Anything you can possibly imagine - up to and including the god of Hell spanking his son for misbehavior. Anime can be pretty irreverent when it comes to its take on God, but it can also be a lot of fun.
When a person attempts to resurrect the dead via alchemy, they are greeted by the Truth, a being who claims to be God. Their job is to uphold the law of equivalent exchange by taking something from the person who attempted to bypass the rules. When Ed and Al meet the Truth, they take Ed's arm and leg, as well as Al's entire body. They're also the keeper of the entirety of human knowledge, which they forcefully cram into the brothers' heads. Truth thinks that humans who seek knowledge that's beyond their comprehension are foolish, but also seems oddly impressed by the attempts.
The world of Death Note doesn't exactly have a god that people pray to - in fact, few religious figures appear to exist, except for gods of death, also known as Shinigami. These gods write down the names of humans and collect what remains of their natural lifespans. The leader of them all is the Shinigami King. Exactly what role he plays is mysterious, but he seems to be in charge of handing out Death Notes and enforcing the rules that Shinigami must follow.
For unknown reasons, the god of time and space, also known as Deus Ex Machina, is dying. His death will cause the world to be swallowed up by a black hole unless he finds a successor. Though he could probably just pick someone without all the fanfare, he decides to do it by creating a series of diaries that predict the future in various ways, and giving them out to people who would be forced to compete in a death game - the survival will take Dues Ex Machina's place as the god of time and space.
Like others on this list, King Yemma is also based on the mythical figure King Enma, the god of Hell, whose job it is to judge the souls of the dead. However, this version of Enma is an overworked, overtired ogre who is easily annoyed by things like people holding up the line to get checked into Heaven. At his discretion, he can send people back to the world of the living, as he does for a dead Goku during a 24-hour period.