Professor Willow

Professor Willow is Pokémon professor who helps new Trainers learn the basics of Pokémon GO and assists experienced Trainers with research tasks he gives them. He is portrayed as a guide who directs and assists Trainers through their Pokémon journey. He appears at the beginning of the game to introduce the mechanics. He can also be found in the Tips Menu and through various Special Research tasks.

Appearance
He has white hair, dark grey eyes and his skin is white. Before Season of Light, his clothes were mostly dark with some lime-green details. He used to wear a white lab coat, glasses, and used to have big blue rucksack in his back. Nowadays, it uses a black jacket, new glasses, brown pants and boots.

Introduction
"Hello there! I am Professor Willow. Did you know that this world is inhabited by creatures known as Pokémon? Pokémon can be found in every corner of the earth. Some run across the plains, others fly through the skies, some live in the mountains, or in the forests, or near water... I have spent my whole life studying them and their geography. Will you help me with my research? That's great! You'll need to find and collect Pokémon from everywhere. Choose your style to start your adventure! "

Trivia

 * The three Team Leaders are his assistants and Professor Willow looks slightly older than them.
 * According to slight glimpses of lore in game, when Trainer transfers Pokémon, they are sent to Professor Willow in exchange for a corresponding Candy.
 * With an update to game version 0.97.2, Professor Willow's graphic appearance became 3D model instead of 2D artwork sprite.
 * On April, 2018, the mini-event called Professor Willow Week started on social-media channels of Pokémon GO, during which game creators encouraged players across the world to post their fan arts and cosplays of Professor Willow. Moreover, on Tuesday, April , there were facts on Professor Willow announced to be released during that week.
 * Professor Willow looks up to Professor Oak and used to be his assistant.
 * Professor Willow's birthday is July 21.
 * Professor Willow's mom researched Pokémon ecology, and his dad was fascinated by the outdoors. Also, he's an only child.
 * Professor Willow's dream is to analyze uncharted territory, examining new Pokémon that have yet to be discovered and documenting where they live.
 * Professor Willow always wear his white coat.
 * Professor Willow may seem outgoing and confident, but also has a pretty strong shy side.
 * During the Professor Willow Week there was shown, on official game Twitter account, the behind-the-scenes look at the game's loading screen related with Research tasks feature release.