It may be possible that they are related, but there is several theories about being family. They may have the same hair cut, like bangs on opposite sides, and same color hair, but in different tones. But maybe the creator made them look alike to make readers and watchers think.
Chat with our AI personalities
it is very possible because kurotsuchi calls Dedara big bro and they deidara calls onoki (kurotsuchis confirmed granfather)granpa but as of 1-29-13.will update answer if it is confirmed.
no way! Deidara is the strongest Naruto character.
Cuz he wants to.
deidara weighs about 179 pounds it is very simple
It wasn't mention in the manga or anime if Deidara even had parents, let alone if they were alive or dead.