Arnie Grape is a character on the 1993 film What's Eating Gilbert Grape.
He is portrayed by Leonardo DiCaprio.
In the beginning of the movie, Arnie is 17 but later on has a party at his family's house for everyone he invited. even if he didn't know many of them. He's disabled and mostly acts and sounds like a 5 year old, he liked to climb things, like the trees in the yard and the water tower down town. He isn't allowed to actually climb the water tower though. Arnie also liked to collect and play with grasshoppers, in one scene he kills one by smashing it in the mailbox.