Batman would likely be very reserved and cautious at first when interacting with The Incredibles. He's used to working alone most of the time. For example, when he meets Mr. Incredible, he might be initially skeptical of Mr. Incredible's more straightforward and sometimes over - confident approach. But as they get to know each other, they could start to respect each other's strengths. Mrs. Incredible might be intrigued by Batman's gadgets and try to learn more about them. Dash could be excited to see Batman's cool vehicles and try to race them. Violet might be a bit shy around Batman at first but could later open up and share her experiences of using her powers in a different way than Batman uses his skills.
In some Syndrome Game Stories, the main character might be a group of friends. Each friend has their own specialty. One might be good at combat, another at finding clues, and another at communicating with different virtual species. Together, they form a strong unit to combat the syndrome that is threatening their virtual world.
Since we don't have any information about the 'love syndrome novel' other than its title, we can only guess about the main characters. Maybe it has a protagonist who is a bit of a hopeless romantic, constantly falling in love and facing the consequences. Or it could be about two people from different backgrounds who fall in love and have to overcome various obstacles. There could also be a supporting cast of family members or friends who influence the main characters' love lives in different ways.
Mr. Incredible is often a central focus. His strength and his journey from being a solo hero to part of a family - centric superhero unit can be explored in many ways. Writers might delve into his past more, like his early days of training and how that has shaped him.
The main characters in the 'world end syndrome story' are a mystery without more knowledge about it. But generally in this type of story, we often see characters like a strong - willed leader who emerges during the chaos, a young and innocent character who represents hope in the face of despair, and a villain - like figure who might be causing the world - ending situation or taking advantage of it for their own gain.