In the teaser of episode 7, we have a recreation of Jack "The King" Kirby's famous double page spread from "Kamandi" #1. In the second background, we have a billboard advertising a "Build-A-Friend". This was from the pages of another Kirby created book called "OMAC". We wouldn't get to see OMAC himself until episode 23 and sadly, Lila is only seen here and is never seen "in the flesh" in the series.
I guess here is as good of place as any to mention that Kirby's work was ever present, not only in the show by the many characters he created, but also by his distinctive art style. You would be hard pressed to find too many cubicles at B:TB&tB without a book, toy or picture hanging up that didn't have something created by Jack Kirby in it. Every time we have a freeze frame of Bats (or any other character) punching someone in Brave and Bold, it is framed with "Kirby Krackle" (we even made a custom Photo Shop brush called "Kirby Dots". Not many artist become an adjective, but Jack Kirby certainly did.
"Batman: The Brave and the Bold" ™Warner Bros. Animation. "Kamandi" ™DC Comics.