One interesting alhaitham fanfic could be about his adventures in a new, uncharted part of his world. Maybe he discovers a long - lost civilization and has to use his intelligence to interact with them.
Ask in relevant online communities or forums dedicated to the source material that alhaitham is from. Other fans might be able to recommend some great fanfics that they've read.
It depends on your preferences. Some might like a comic for its unique style and story, while others might prefer x comic for its specific themes or characters.
It depends on your perspective. X has moments of kindness and goodness, but he also makes mistakes like any character. So, it's a bit complicated to say he's purely a good boy.