Lawrence "Larry" Daley is the main protagonist in the Night at the Museum films and Night at the Museum: Battle of the Smithsonian (Videogame).
His character based on Hector the night watchman who works at New York City's American Museum of Natural History in 1993 children's picture book written and illustrated by Milan Trenc.
Larry started off as a man who had trouble finding work, his inventing career did not take off for a while so he decided to work at the Museum of Natural History as a night guard. When he found out that everything came to life he wanted to quit. But then he realized that he needed to protect the Tablet of Ahkmenrah or everything in the museum would turn to dust.
When Larry tells Cecil about how Dexter tore up his instructions, Cecil advises him to study history to prepare himself for his nightly duties. He also learns history from a museum docent Rebecca Hutman, who is writing a dissertation on Sacagawea, but does not feel she knows enough about her subject.
Later, the tablet got stolen by Cecil and two other night guards so Larry and the other members of the museum set out to retrieve it. They ended up getting the tablet and restoring it to it's rightful spot in the museum.
Rebecca sees the exhibits return to the museum before sunrise and realizes that Larry was telling the truth; he introduces her to Sacagawea. Dr. McPhee fires Larry again after seeing news reports of the strange events around the museum – such as cave paintings in the museum's subway station, dinosaur footprints in Central Park, and cavemen sightings. However, upon seeing how much these events raised attendance, he thinks better of it and gives Larry his job back. Larry, Nick, and the exhibits celebrate the following night and throw a huge party for everyone.
Night at the museum: Battle of the Smithsonian
Three years after the events of the first film, Larry now runs his own company Daily Devices in which he invented the Glow-in-the-Dark Flashlight, Super Big Dog Bone and the Unloseable Key ring. And eventually quit job. He visits to the museum, discovering most of the exhibits will be moved to the Federal Archives at the Smithsonian Institution, replaced with holographic information providers and The Tablet of Ahkmenrah is to remain in the museum, leaving most of the exhibits without the ability to come to life at night. After the exhibits are moved, Larry receives a phone call from Jedediah, who informs him that Dexter the monkey stole the tablet and took it to the Smithsonian, bringing every exhibit in it to life. Larry travels to Washington, DC, navigating his way to the archives with help from his son Nick while posing as a night guard. Larry finds his friends trapped in their shipping container under attack from Ahkmenrah's evil older brother Kahmunrah, accidentally activating the tablet and bringing the exhibits in the Smithsonian to life again and defeated nim with help his friends and Amelia Earhart.
Amelia flies Larry and the New York exhibits back home. Even though Larry does love Amelia, they both know she has to leave, knowing she will become dust before reaching the Smithsonian. However, the two share a final kiss before she takes off.
Later Larry sells his company, donating the money to the museum to renovate it and keep it open later into the night, and the exhibits remain, capable of moving about at night under the pretense of being animatronics or hired re-enactors. Larry is rehired as a night guard and aids a woman named Tess who resembles Amelia during the debut of the museum's new extension of visiting hours.
Larry now nigth program director and has a Planetarium exhibit grand opening being spectated Dr. McPhee. But the grand opening goes haywire, creating trouble with his job and McPhee getting fired. He goes home and finds his son, Nick throwing a party and him being as DJ. Larry seeks help from Cecil for information, who informs him that Ahkmenrah's parents are located in London. They save the Tablet but have a little trouble with Sir Lancelot, who is at the British Museum. Teddy and others New York exhibits decided that Ahkmenrah (with Tablet) should stay with his parents if they not become alive again. Larry unwillingly accepts their decision and before returning home he tell Tilly (British Museum night guard) that her boring job become coolest since tomorrow nigth. After that he return in New York spend last sunset with his friends.
Three years later it is reveal by McPhee that Larry help him return his position as director by took blame on nimself. And he went back to school, got his degree and became teacher. Tilly, who has traveled with exhibits (including Ahkmenrah and Tablet) to New York, revealed truth to McPhee about Tablet and her magic abilities because Larry told her to do it and McPhee can be trusted. In end we seen Larry outside looking to party over Museum and smiles.
- He half Irish and half Jewish.
- He have father named Milton and son Nick from previous marriage.
- According to videogame, he also nave cousin who Larry describes "evil", when Ahkmenrah tells him about his evil brother Kahmunrah.
- Larry lived in Brooklyn in first film, but reveald in third he moved out to Manhattan.
- Larry Daley has been the main character in all three films and videogame.