To commemorate Professor Willow’s expanded role in Pokémon GO, Niantic has dedicated this entire week to the man himself. During Professor Willow Week, the developer wants players of its immensely-popular mobile game to share Professor Willow fanart and cosplay. Niantic is posting its favorites throughout the week. In addition, the developer is now sharing some Professor Willow facts for Professor Willow Week. According to Niantic, Professor Willow looks up to Professor Oak and used to be his assistant. The developer also says Professor Willow’s birthday is July 21, which is also the same day the immensely-popular mobile game launched in Japan.