I think they are good. The Martian Manhunter comics usually offer interesting adventures and explore his unique powers and personality. However, like any comic, it might not be for everyone.
I think it's quite good. The storylines are engaging, and the art is often top-notch. However, it might not be for everyone as it can get a bit complex at times.
Manhunter is purely fictional. The plot and characters were made up by the writer or creators for entertainment purposes and not drawn from real-life events.
One of the best is 'New Frontier'. It shows Martian Manhunter's struggle with his identity in a new world. His alien nature and his longing to fit in are beautifully depicted.
In Lego Batman 2 set in Lego Gotham City, the story revolves around Batman's efforts to keep the city safe. He teams up with Robin and other heroes. They have to deal with the likes of The Joker and his devious plans. There are also side stories involving the other characters in Gotham, and the whole thing is filled with the charm of Lego building and play. For example, there are parts where they have to use Lego gadgets to solve problems and progress through the story.
There's this fanfic called 'Alliance of the Martian'. It's about Martian Manhunter forming an unexpected alliance with some of the villains in the DC universe. It's a unique take as it shows how he tries to understand their motives and turn them into allies. It's full of twists and turns that keep you hooked from start to finish.
First, study the character. Know his powers like shape - shifting, super strength, and telepathy. Then, think of a unique plot. Maybe something about his life on Mars before coming to Earth. Also, create new characters that can interact with him in interesting ways.