What is Jon's last name in the "Garfield" comics?

Jonathan Quentin "Jon" Arbuckle is a fictional character from the "Garfield" comic strip by Jim Davis. He has also appeared in the animated television series Garfield and Friends, the computer-animated The Garfield Show, and two live-action/computer-animated feature films.

A geeky and clumsy man, Jon is the owner of Garfield and Odie. He converses with Garfield and is often the butt of his jokes. In the animated "Garfield and Friends", he was frequently portrayed as being incredibly gullible when faced with unscrupulous salesmen and rather dimwitted in general. On "The Garfield Show", however, he's portrayed as being smarter, but still a little gullible.

Jon's birthday is July 28, as Jon told Garfield that he was 29 years old (he would have been 30 but he was sick a year) in a December 23, 1980 strip. However, in the episode "T3000" of "The Garfield Show", he is described as 22. In the animated show "Garfield and Friends", we learn that Jon has an Italian ancestor whose name was Tony Arbuccli. Some episodes of the show suggested that Jon and his pets live in Muncie, Indiana. Jon wears contact lenses, his eyes are green, and his favorite music style is polka. Jon believes in God, as he is seen praying before going to bed in the April 29, 1987 strip.