One idea could be Elastigirl having to deal with a new supervillain who has the ability to manipulate time. She would have to stretch her powers in new ways to overcome the time - warping challenges. For example, she might have to stretch across different time zones simultaneously to stop the villain from creating chaos throughout history.
A possible plot for 'rwby the incredibles fanfiction' is that Syndrome from The Incredibles teams up with Salem from RWBY. Syndrome offers his advanced technology to Salem in exchange for her help in getting revenge on the superhero community. The RWBY characters and the remaining Incredibles then have to find a way to stop this unholy alliance. They might start by training together to combine their different skills. Ruby could teach Dash some new acrobatic moves, and Elastigirl could show Blake how to use her flexibility in combat more effectively.
One idea could be an OC with the power to manipulate time joining the Incredibles. They could use their power to prevent disasters or even go back in time to change events that led to Syndrome's rise. Another idea is an OC who is a super - fast healer. They could play a crucial role in patching up the Incredibles after tough battles.
A really cool plot could be that Frozone and Batman meet and decide to have a friendly competition of who can be the most stealthy in a series of challenges across both their cities. However, they soon realize that a new villain is using their distraction to carry out a big heist. So they have to put their differences aside and work together. Another idea is that Violet and Robin become friends and exchange tips on how to be better heroes. Then they use their combined skills to stop a villain who is targeting young heroes in both universes.
Another interesting concept for 'The Incredibles' fanfiction is to focus on the kids. For example, create a story where Dash discovers a new power that he has to learn to control while also dealing with school and family life.
One idea could be that Tony and Violet team up to solve a mystery in their neighborhood that the regular police can't handle. Maybe there are strange disappearances and they use their unique powers - Tony's tech skills and Violet's invisibility and force fields - to uncover the truth.
One memorable moment is when she first reveals her powers in the movie to fight the bad guys. The way she stretches to catch her falling son is really cool.
One idea could be an OC who has the power to manipulate time. They could accidentally get stuck in a time loop during a mission with the Incredibles and have to figure out how to break free while also helping the family stop the villain.
A more character - driven 'The Incredibles' lemon fanfiction could be about Dash being allergic to lemons. This creates a lot of chaos when he accidentally ingests something with lemon in it during a family picnic. The family has to quickly figure out how to deal with his allergic reaction while also fending off any potential threats that might take advantage of the situation.
Well, a plot might involve Elastigirl using her stretching abilities in creative ways to solve a mystery related to a lemon - scented object. Maybe she has to find out who stole a precious lemon artifact. She could also be in a situation where she has to stretch across great distances to reach a lemon grove that holds a key to saving the city from an unknown danger. And she might meet some new friends along the way who are also interested in the lemon - related mystery.
One plot idea could be that Tony discovers a new power within Violet that she herself is unaware of. Maybe it's a power that only emerges when she's in a state of extreme emotion related to Tony. This could lead to a whole adventure where they explore this new aspect of her abilities together.