Bartleby (that's his last name) the Scrivener is a famous Herman Melville character whose surprisingly powerful refrain was, "I would prefer not to." Or, in the immortal words of any two-year-old: No.
Putting that aside, Bartleby could make a uniquely lively literary alternative to Barnaby.
Bartleby the Scrivener: A Story of Wall Street was made into movies three times, the latest starring Christian Glover. In the 1999 film "Dogma," Bartleby is a fallen angel played by Ben Affleck.