It could still be Harry Potter himself. He has a history of facing dangerous creatures and dark magic, so it would be natural for him to take on the challenge of the deadly snake.
One possible plotline could be the discovery of a new type of deadly snake in the Forbidden Forest that has some mysterious connection to dark magic. Maybe the snake is guarding a long - lost artifact.
Another example could be a fan - made deadly curse. Some fanfictions create their own curses that are just as deadly as the ones in the original series. These new curses can have unique effects and ways of being cast. For example, a curse that slowly drains a person's life force instead of killing them instantly like Avada Kedavra.
In Harry Potter fanfiction, deadly curses often add a darker and more dangerous element. For example, the Unforgivable Curses like the Killing Curse. Fanfic authors might explore how characters are affected by these curses in different scenarios. They could show a character narrowly escaping a deadly curse, which heightens the tension and drama in the story.
" Deadly Python " was a Hong Kong film directed by Li Chao and released in 1988. The movie told the story of a high-tech experiment that went wrong, causing a python to escape and become bigger. The python initially became friends with a girl, but a triad organization had always wanted to destroy it. The python finally disappeared after being electrocuted by a high-voltage electric shock. However, while the people were happy, a bigger python emerged from the fog. Other than " Deadly Python," there were also movies related to pythons, such as " Mutated Wild Python 2 " and " Snake King." These movies were all about pythons and told stories related to them.
It could also be a snake from the Forbidden Forest. There are many unknown and mysterious creatures in there. A snake from that forest might be more in tune with the natural magic of Hogwarts. Harry, being the curious and kind - hearted person he is, might come across it during one of his adventures in the forest and start a friendship with it.
It could be Nagini. Even though in the original series she was more of a servant to Voldemort, in the fanfiction, she could have a different personality and form a bond with Harry.
Maybe it's an anonymous gift from someone who has been observing Harry. This person could be a former student of Hogwarts who has a special connection to snakes and sees that Harry has a kind heart and would take good care of the snake. So they leave the snake for Harry to find with a simple note that just says 'For Harry Potter'.
The snake's help could represent an unexpected alliance. In the Harry Potter series, snakes are often seen as symbols of Slytherin, which is usually at odds with Harry. So it's significant as it breaks the stereotype of enmity between Gryffindor (represented by Harry) and Slytherin.