Did Lego Justice League just appear in the 'Lego Batman' trailer?

Lego Batman 2: DC Super Heroes (Video Game 2012) - IMDb

The LEGO Batman Movie - Rotten Tomatoes

Lego Batman movie trailer shows glimpse of The Dark Knight in his Bat Cave

LEGO DC Comics Super Heroes - Justice League: Attack of the Legion of Doom! Trailer Debut - IGN

LEGO Batman' Movie Trailer Hits Online (Video) – The Hollywood Reporter

The Lego Batman Movie: “I Don't Do Ships…” – God Among Geeks

LEGO Batman The Movie: DC Superheroes Unite : Various, Various: Movies & TV

LEGO Batman The Movie: DC Superheroes Unite

AMC Theatres - Check out Dolby Cinema's exclusive poster for The LEGO Batman Movie - coming to Dolby Cinema at AMC February 10!

Lego Batman' has a lot of fun mocking 'Batman v Superman,' but there's no beef there

Premiere Event Set for 'Justice League: Gotham City Breakout

Lego Batman 2 no longer happening as director reveals the sequel's scrapped story