Although Billy was always eight years old nominally, he did grow quite a bit throughout the life of the comic strip.
In the very early strips he looked six. He very rapidly grew up to look like the eight-year-old he was supposed to be, and then growth continued but slowed down. In today’s strip he looks 10 to 11 (IMO), and at the end of the strip he looked like a twelve-year-old.
Although Billy was always eight years old nominally, he did grow quite a bit throughout the life of the comic strip.
In the very early strips he looked six. He very rapidly grew up to look like the eight-year-old he was supposed to be, and then growth continued but slowed down. In today’s strip he looks 10 to 11 (IMO), and at the end of the strip he looked like a twelve-year-old.