Arnett has voiced Lego Batman three times in 2014's "The Lego Movie," 2017's spinoff "The Lego Batman Movie," and 2018's "The Lego Movie 2: The Second Part." Chris Miller, one of the franchise's creators, told UpRoxx in April 2023 that a planned Lego Batman sequel likely will not happen because of rights issues, but said of the idea for it, "The sequel would've been a quasi 'Superfriends' movie and the structure was going to be a sort of 'Godfather II' kind of thing with Batman and the Justice League facing a modern-day problem, Lex Luthor and OMAC, while at the same time flashing back to the reasons why Batman and the Justice League – and in particular, Superman – have bad blood."
