Welcome to the "dead characters archive" and Omake page! Omake is Japanese - it means 'extra' and usually refers to side-stories that don't fit continuity (like all Dragonball movies...) or self-parodying works. (like all Dra... Nah. Too easy.)
Omake
One of my favorite Omakes ever, and a great example of the style, is from the series 'Blue Seed,' and was titled Lord SusanOh-Oh. In the series, Lord Susano-o was a ancient humanoid mystical being, who was re-incarnated in a child's body. He almost never spoke at this point, and he spent much of his time staring at something, like a pond or a hat, then taking some action, like throwing a stone into the water, or handing the hat back to its owner. In Lord SusanOh-Oh, they mocked their own character. I will repeat that. Their own character. Lord Susano-o spent some time staring at the ocean, then threw a stone in. A fish popped up (with a bump on its head) and threw the stone back. To paraphrase Bugs Bunny, "of course you realize, this meant war." In another segment, Susano-o was on a short mesa, staring at the sky as a whine built in the background. The plane's landing gear caught the reincarnated one full-on. Get the idea?
Dead Characters
Killing player characters is, of course, forbidden. Although in fact, killing your character will result in your chapters being moved here. These are the chapters and characters that either have no authors, or have new authors that have replaced the old chapters.