He rebels against his father and keeps hanging out with Sarah. Elliot thinks that she is cool. When the Bakers leave after lunch at the Boulders, he says 'bye' to her. Sarah shyly waves back and gets into the car.
Elliot is in the 8th grade and plays the timpani. He is also a honors student and plays football, basketball and likes to skateboard. It is shown that he can do tricks on his board.
When the Murtaughs discuss their tactics for the Labor Day Cup, he waves to Sarah. His father tells him to stop acting all 'nicey-nice'.He is the second one to jump out of the canoe. He also waits with the rest of the Bakers/Murtaughs while Nora Baker-McNulty is giving birth.
In the second film, Elliot Murtaugh is played by Taylor Lautner.