Comic References
Foxtrot
12/13/2005 - New storyline has Peter Fox wearing a Donkey Kong mask and tie.
04/01/2006 - How Come I'm Always Luigi? is released. The cover shows Jason and Marcus pretending to be Mario and Luigi.
Howard & Nester
10/01/1988 - Howard gives a tip for Super Mario Bros. 2
06/01/1990 - Howard and Nester debug Super Mario Bros. 3
Both these strips can be seen at The Howard & Nester Comics Archive.
Sally Forth
10/27/06 - New storyline has Sally and Ted dressed as the Super Mario Bros. for a Halloween party. Unfortunately, no one has any idea who they are supposed to be, and the closest guess is "an affront to the Italian Defamation League?" Also, a Donkey Kong-like costume can be seen in the background of one of the strips. The strips can be seen here.
For information about comics starring Mario, visit the publications page.