A little old lady who runs a small bakery near the hotel. She could be really kind and give Kevin free food. But she also has a tough side. When she finds out about the burglars, she could help Kevin by using her baking skills. For example, she could make slippery floors with flour or use hot pans to scare the burglars away.
A group of pigeon trainers. In New York, pigeons are everywhere. These trainers could teach Kevin how to communicate with the pigeons. So, Kevin could use the pigeons to spy on the burglars or even drop little things on them to annoy them and disrupt their plans.
A friendly street artist. This person could be really good at creating life - like sculptures out of trash. Kevin could meet this artist and they could work together to create some really cool and big distractions for the burglars. For example, making a fake police officer out of cardboard and trash to scare the burglars away.
There could be a young detective - in - training. He's trying to solve the case of the burglars on his own but teams up with the home - alone kid. He brings his detective skills like fingerprint analysis and code - breaking, while the kid has the knowledge of the house layout and his creative trap - making abilities.
A young and talented apprentice could be introduced. This character is eager to learn from the wedding singer and brings a fresh energy to the story. Maybe they have some unique musical ideas that the singer can incorporate into his performances.
The main villain could be an escaped criminal who stumbles upon the house thinking it would be a good place to hide. But when he realizes there's a kid alone, he decides to take advantage and ransack the place. The kid has to use his wits and the resources around the house to defeat this dangerous villain.
A wise old owl that can talk. It could give the main character advice on how to better survive in the forest, like where to find the best berries during different seasons or how to predict bad weather. This magical element would make the fan fiction more unique.
There could be a group of misfits. They are all in different ways trying to fix their own ruined lives. Together, they form a sort of support group. They might include a former addict trying to stay clean, a bankrupt businessman looking for a new start, and a lonely widow seeking companionship. Their interactions with the main character could be both comical and inspiring as they all learn from each other and grow.
A food critic from a big city who comes to review the family's restaurant. He initially has a very different view of Greek food but as he gets to know the family and their passion for cooking, he becomes more open - minded. His character could add a new dimension to the story as the family tries to impress him and show the true essence of Greek cuisine.
There could be a new neighbor in Jenna's apartment building. A quirky artist who inspires Jenna in new ways, either in her personal life or her career at the magazine.
There could be a new scientist who helps Peter with his web - shooter technology. Maybe this scientist has some secret knowledge about the symbiote or other aspects of Spider - Man's powers. Another new character could be a foreign exchange student at Peter's school who turns out to have some sort of superpower or connection to the superhero world. Or it could be a new villain's henchman who later has a change of heart and helps Peter.
Another interesting 'Home Alone' fan fiction idea is to write a story set in an alternate universe where the burglars are actually good - hearted but misunderstood characters. Kevin befriends them and they end up helping him with some neighborhood problems, like stopping a local bully from bothering other kids.
A street urchin who befriends Scrooge after his transformation. This urchin could represent the hope and innocence that Scrooge starts to cherish. The urchin could teach Scrooge about the simple joys of life that he has long forgotten.