Iron Giant

He is a genial 50-foot tall autonomous robot from another world that crash lands on Earth before becoming friends with a young boy named Hogarth who rescues him from his own internal defensive mechanism. Although he chose to resolve conflict through peaceful means, the Giant is armed with a highly destructive weapons arsenal which would trigger whenever he was threatened. The Giant would appear to loose self-awareness in this state, and aim to kill or destroy whatever was targeting it, even his friend, Hogarth. (His speech is slow as he sometimes repeats what others say such as "..... friend?" or "you....stay.." erc)