This Kids' WB! ad appeared in the September 1998 issue of Disney Adventures magazine. This ad has an image of the main characters, Zadam and Triply, along with other animated characters Superman, the Men in Black, Batman, Yakko, Wakko, Dot, Tweety, and Michigan J. Frog. The inside fold gives us a schedule of the Kids' WB! shows and shows B.R.A.T.S of The Lost Nebula would be airing on the weekends. The magazine itself also included some information on the show, listing it in the "TV's Top 10 New Toons" article.
This ad gives contains brief information on the five B.R.A.T.S characters.