Story about a guy reincarnating as a martian thousands of years before DC canon timeline starts.
Spends most of his time working on shapeshifting until he has absolute control over his own body, to the point where he can control individual cells, and stop his cells from degrading over time, making him immune to the effects of aging.
Works on his other powers over time, until he is OP, and then goes to earth.
Not really thought of anything else as far as plot goes for this story, but i thought it would be interesting to have a story about a guy living through alot of DC-earths history, and i always thought that the martian manhunter was underrated.
Let me know what you think, and if you have some ideas on how to improve the concept.
Also, if you want to use this concept, please send me a message first. Would appreciate it.