Who Admitted This Animagus to Hogwarts?

Traveling through time as a baby in a tribe of giants, Martin discovered that he had a system panel. However, he found that he could not read the panel! Until one day, when he was still a baby and crawling on the ground, he accidentally crushed a mosquito to death with his palm, and then discovered that the system panel had changed: ‌mosquito‌ (1/100000) So, he spent his childhood swatting mosquitoes. At 5 years old, the panel finally became ‌mosquito (100000/100000) He discovers that he can transform into a mosquito! I can finally understand the system panel. But he found that the first task was actually to escape from the giant tribe! But he is only a 5-year-old child. Even an Animagus cannot escape from the giant tribe. He is surrounded by primeval forests. A baby has no ability to survive, and a mosquito will be eaten by dragonflies, bats, spiders... All kinds of natural enemies at any time! This is simply an impossible task! ... Until that day, Hagrid came here and took him to Hogwarts to go to school, and he didn't know that this was the world of Harry Potter. At Hogwarts, Martin discovered many unknown secrets, such as Dumbledore's unknown habits. It was not accidental that Tom Riddle found the method of making Horcruxes in the forbidden book... Voldemort: Get some garlic and get rid of that terrible mosquito! Dumbledore: Don't come into my room again. I love swatting mosquitoes. Martin: I'm just a mosquito flying around happily