#706 - Before Waluigi

A 1993 Japan-exclusive manga, called Super Mario 4koma Manga Theater, included a hypothetical drawing on what an "evil version" of Luigi would look like, the same way Wario was an "evil version" of Mario. Waluigi was introduced in Mario Tennis (2000).

SOURCE 1: https://www.mariowiki.com/Super_Mario_4koma_Manga_Theater

SOURCE 2: https://warelander.tumblr.com/post/178607037935/wariofranchisefanblog-while-waluigi-did-not?is_related_post=1