The Bill is the main character of the "I'm Just a Bill" Schoolhouse Rock! segment which first aired in 1975.
The Bill apeears in a 5-minute animated short parodying that of "I'm Just a Bill" from Schoolhouse Rock! featuring Finn the Human, voiced by Jeremy Shada, playing the role of the boy who was the bill's friend. Animated by Greg Miller, the whole short is a parody of the segment itself.
The Bill is voiced by Jack Sheldon, reprising his role from Schoolhouse Rock!.