McKay told EW, “There are going to be the repercussions of what’s happened in [LEGO Batman].
Those who enjoy Arnett’s riff on the Caped Crusader will be pleased to learn the plan is to bring him back for The LEGO Movie Sequel.
Additionally, that subplot in The LEGO Movie was so well-handled, any attempt to duplicate it in LEGO Batman would run the risk of being less genuine and not as affecting.
After seeing Batman learn the importance of working with friends, it would be a shame if he reverted back to his loner ways like nothing ever happened.