Patrick Keller started doing a vocal education after doing an internship in a voice-over studio
In 2012, he started working regularly. Since then, he lent his voice to characters like Kazuto Kirigaya from Sword Art Online, Hewey Duck from DuckTales and Bell Cranel in DanMachi.
The Age of his vocal roles is around 15-25 years. Besides Anime, he also voices commercials, audio books, games, as well as TV Shows and movies
Overall, he has voiced over 300 characters.