Yes, he dies when after he saves Harry, Hermione, Ron, and others from the death eaters. Pretty sad, =(
Yes he is.
Bellatrix kills him in Harry Potter and the Deathly Hallows
Bellatrix Lestrange.
Dobby's age was never mentioned in the series.
Yes he was nice because he saves Harry in the Deathly Hallows
Dobby and Kreacher.
Dobby died in Harry Potter and the Deathly Hallows.
Saves peoples' lifes then gets killed by Bellatrix Lestrange.
When Dobby dies. The chapter entitled: "The Forest Again"
"Dobby didn't mean to kill anyone. Dobby only meant to maim or seriously injure"
He has been in the second film: Harry Potter and the Chamber of Secrets and Harry Potter and the Deathly Hallows: Part 1.
Several of his friends died; Fred Weasley, Dobby and Remus Lupin to name a few.