Harry Shearer is a talented voice actor known for his work on various animated series, including "The Simpsons" and "The Mighty B!" His distinctive voice and versatile range could potentially bring an interesting interpretation to the character of Barbamon in a Digimon anime.
Ultimately, whether Harry Shearer or any other specific voice actor would be cast for the role of Barbamon in a Digimon anime is a decision that lies within the purview of the production team. Casting decisions are subject to change and may be influenced by various factors such as budget, scheduling, and the desired characterization for Barbamon.