Performer(s) Appeared in Dr. Elizabeth "Liz" Wilson is a character from the newspaper comic strip Garfield. She is Garfield's veterinarian, introduced in the strip on June 26, 1979. Jon had a huge crush on her and was always attempting to ask her out on a date, but rarely succeeding, and the occasions when she did agree to go out with him were often disastrous. Eventually, though, in a 2006 story arc, Liz admitted that she actually did love Jon and finally got together with him.