Batman (Lego Movie)

Batman (real name Bruce Wayne) is a major character in The LEGO movie series. Throughout his theatrical lifetime, he has served as one of the two tritagonists (the other one being Vitruvius) in The LEGO Movie, the main protagonist in The LEGO Batman Movie, and a supporting character in The LEGO Movie 2: The Second Part.

History
Just like every version of Batman, Bruce Wayne lost his parents when he was really young, which made him develop a fear of being part of a family again. Years later, he started fighting crime as "Batman". In The LEGO Movie universe, he was fighting crime for at least 51 years at the time The LEGO Batman Movie came out, as Alfred remembers him going through a "weird phase" in 1966. He ended up with many villains to fight over the years.

Batman is Wildstyle's ex-boyfriend, and he fought alongside her, her current boyfriend and his friend Emmet Brickowski, and his fellow Master Builders and the citizens of Bricksburg against Lord Business's forces. He married Queen Watevra Wa-nabi who is the main false antagonist and the supporting protagonist of The LEGO Movie 2: The Second Part.

The Lego Movie
Batman is one of the main characters in The LEGO Movie. He saves Emmet, Vitruvius, and Wyldstyle in the old west. He accompanies them on their mission to bring down Lord Business. As time wears on, Lucy begins to fall for Emmet which Batman notices, but doesn't mind. In the end, he gives his blessing for her, saying that Emmett is "the hero you deserve", referencing Gordon at the end of The Dark Knight.

The Lego Movie 2
Batman is back in Bricksburg, now Apocalypsberg after his "solo adventure." However, General Mayhem kidnaps him, Metal Beard, Unikitty, Lucy, and Benny to take them to the Systar System. There, Queen Watevra Wa’Nabi plans to wed Batman to unite their worlds, in order to prevent an imminent disaster known as "Armamageddon". Batman is very off-put by the idea of marriage but agrees to the wedding to outdo Superman when Queen Watevra Wa’Nabi claimed he was her first choice.

The Lego Batman Movie
Batman is back in Gotham, dealing with his Rogue Gallery. Along the way, he meets Batgirl and Robin who become a part of his family, along with Alfred. Though it takes him a while to open up and accept them as family due to fear of losing more people he cared for.

Personality
"Your greatest fear is being a part of a family again."

- Alfred to Batman Batman is often seen at the surface level, criticized for his lack of care for other's well-being. After the death of his biological parents, Bruce himself had grown far apart from others and strives to protect himself from losing any loved ones again, leaving him very lonely as a result. Especially before his change in The LEGO Batman Movie, he attempted to cover his insecurities with snarky humor or childish disobedience (much to the dismay of Alfred). After days of action and excitement, while the whole city would celebrate Batman's heroic actions, he found that hiding within the depths of his manor would ease his mind away from the stress of risking those he loved.

He finds his truest form of companionship when he meets Queen Watevra Wa-Nabi, whom he was arranged to marry to reunite his world with her's in peace. He wasn't interested at first, but his ego gets the better of him when she sings about preferring Superman. Afterwards, he proposes to her to prove that he's better. Despite a non-altruistic start, he comes to feel a connection with her when he hears how she was also lonely living in a palace with only a fussy British servant and nobody to relate to her. With her influence, he becomes a more cheerful person and happily marries her in the end, successfully uniting their worlds.

Trivia

 * During the song "Gotham City Guys", where the Queen expresses her dislike for men who live in this area, all the Batman actors are referenced.
 * When the captured Lego figures first meet the Queen, she's in a horse form and then turns into an octopus, causing Batman to tell her to go back, because the horse was a lot more palatable. At the end of the movie, she is indeed a horse again, and Batman is on her back.
 * In the scene where Batman and Benny infiltrate the Octane Tower, the Caped Crusader throws a total of 17 Batarangs in order to open a door that blocks their path.
 * In The LEGO Movie 2: The Second Part, when the Justice League tries to hunt the DUPLO Invaders, Wonder Woman says Batman is off on a solo adventure - referencing The LEGO Batman Movie. Later, Emmet asks him about it, and he notes that he's loved, lost, and learned about family, but he's back on his own. This connects the timeline and acknowledges the events of said film as canon.