The available sources contain no information about a character named Will in the anime Pikaia!! or its related media. These materials exclusively discuss the prehistoric organism Pikaia gracilens and the first season of the anime Pikaia! (2015), specifically detailing characters including Vince, Hana, Dr. Parker, Morris, Irma, and Fraser. The second season, Pikaia!! (2017), receives only a brief mention without character details. References to a character named Will are absent across all examined sources.