"Trident Books owner" is not an official name.
Trident Books owner
Trident Books owner
Gender Male
Animal Bear
Hair color Blond
Residence Elwood City
Futuropolis (imagination)
Job Owner of Trident Books
Cartoon debut "Prunella and the Disappointing Ending"

The owner of Trident Books opened his store to let the crowd buy the new Henry Skreever book. He also appeared in Arthur's imagination, handing the Police a medal to present to Supernova.