Markiplier reads fanfic because it's a fun and different kind of content for his channel. It gives his viewers something new and unexpected. Also, it's a way to give back to his fans who put a lot of effort into writing these stories.
Yes, he does. Markiplier is known for his creative content, and fan fiction is one of the ways he engages with his fans. His fan fiction often includes interesting storylines and characters that are loved by his followers.
Sure. Ironman's kid in the comics is Morgan Stark. This character adds a new dimension to the story and explores the family aspect of Tony Stark's life.
Deadpool does have a kid in certain comic versions. However, the presence and role of the child can vary greatly depending on the writer and the particular comic series.
Markiplier's fan fiction varies a great deal. One type he makes is the 'what - if' scenarios. For instance, what if a character from a game he played made a different choice at a crucial moment? He also creates fan fiction that focuses on character development. He'll take a relatively flat character from a game or his own content and give them more depth, backstory, and motivation. Additionally, his fan fiction can be a mix of different genres, combining elements of horror, comedy, and drama, much like his video content. This makes his fan fiction appealing to a wide range of his fans.