Jim Amash identifies the penciller in The Quality Companion (TwoMorrows, 2011 series) #1 (November, 2011), page 93.
All Gustavson credits verified and courtesy of Terry Gustafson, son of Paul Gustavson.
The Who's Who suggests, as do Mike Kooiman and Jim Amash in the Quality Companion, that Kiefer not only created this feature, but did the art for it through the strip's entire run. Kiefer is also usually considered to have written it.
Cameo: Gill Fox (or at least his hand)
The fact that Pug and Brian were the spitting image of one another served well in future stories to protect the identity of the Clock, since the Clock and Brian could appear together.
appears on bottom half of Jane Arden pages.