What are the Most Popular Fanfiction Plots about Harry Potter being Born as an Animagus?

One great fanfiction in this vein is 'The Born Animagus Potter' on FanFiction.net. It has an interesting take on how Harry's life would be different if he was born with the Animagus ability. The story delves into his early years, showing how he might have hidden this power from the Dursleys.

In some fanfics, the plot might involve Harry using his snake form to spy on the Death Eaters. For example, he could slither into their secret meetings undetected. Another interesting plot could be that his snake form is somehow connected to Salazar Slytherin. Maybe he discovers that his ability to turn into a snake is part of an ancient bloodline magic.

One popular theme is the discovery of being an Animagus. Many fanfics explore how a character suddenly realizes they have this ability and how they deal with it. For example, they might be scared at first but then learn to control it.

There are not many fanfictions on this specific topic. However, if you search on platforms like Fanfiction.net or Archive of Our Own, you might find some rare gems. You could start by using keywords like 'Harry Potter', 'Animagus', and 'Manticore' in the search bar.

Minerva McGonagall is also a favorite. Her Animagus form of a cat gives a lot of room for creativity. Fanfictions might show her observing Hogwarts in her cat form, seeing things that she wouldn't as a human, and using that knowledge to protect the school and its students.

One interesting plot could be Harry using his Nemean Lion form to protect Hogwarts from a new, powerful dark force. His enhanced abilities as the lion could give him an edge in battles.

One popular fanfiction concept could be a character like Hermione becoming a raven Animagus. She could use her new form to spy on Death Eaters or gather information in a more discreet way. For example, she might fly into the Forbidden Forest to study dark creatures from a safe distance without being detected.

There could be a fanfiction where Harry Potter's Animagus form is a phoenix. When approaching Cerberus, the phoenix's natural magic and allure might have an unexpected effect on the fearsome beast. The phoenix is a symbol of rebirth and magic, and perhaps its presence could either calm Cerberus or lead to a completely different kind of encounter. Harry would have to rely on his instincts as a phoenix - Animagus to navigate this dangerous situation, and it would be a great adventure for him.

One possible fanfiction could be where Harry discovers his ability to turn into a Black Lion Animagus during a dangerous encounter in the Forbidden Forest. He uses this form to protect his friends from a dark creature that has invaded the school grounds.

One possible scenario in such a fanfiction could be that Harry discovers his unique Animagus form of Indominus Rex during his time at Hogwarts. Maybe it's a result of some dark magic experiment gone wrong in the Forbidden Forest that alters his magical core and gives him this fearsome form. He would have to hide it from his friends and teachers at first, fearing the consequences.