Name : Deidara (Deceased)
1st Appearance : Chapter 247
Village : Hidden Rock Village
Rank : None, Nukenin (Missing-nin)
Position : Right index finger
Partner : Originally Sasori
Affiliation : Akatsuki, Nukenin (Missing-nin) from Iwagakure (Hidden Rock)
Signature Abilities : Hand-mouths, Kibaku Nendo (Exploding Clay), Jibaku Bunshin (Suicide Bombing Clone)
A Missing-nin from Iwagakure, Deidara is one half of the Akatsuki duo that comes to Sunagakure (Hidden Sand) to kidnap . A fancy and skillful fighter, with special mouths in the palm of each hand, he is able to manipulate clay into either a flight-capable clay bird that can support him, as well as a huge bomb that is capable of leveling a village without the use of exploding tags. Deidara is teamed with , whom Deidara refers to as Sasori no Danna (Master Sasori). This is probably because Deidara has a lot of respect for his fellow artist because Sasori is, as Deidara himself admits, a lot stronger. Despite that, Deidara still argues a lot with Sasori. They often argue about what art is, Deidara holding that art is something that is transient, departing quickly ("Fine art is the beauty of that single fleeting moment of explosion.") whereas Sasori believed that good art is immortal, a thing that lasts a long time. ("Fine art is something wonderful that's left long into the future... Eternal beauty.") Deidara outwardly seems to respect Sasori's beliefs, but couldn't resist getting a final jab in after Sasori's death ("Like anything that is left for the future as a thing of eternal beauty... He got killed straight off!").
During his fight with Gaara, his left arm was mangled by Gaara's Sabaku Kyu (The Coffin of Crushing Sand), but he still managed to defeat the new Kazekage when he threatened Sunagakure itself. Deidara remarked after winning that it was just like a Kage to save their village over their own life. This may or may not imply a history with another Kage, most likely the Tsuchikage.
Deidara lost his right arm to when Kakashi used his newly obtained Mangekyo Sharingan against him. As a last resort (and in keeping with his favorite art form), Deidara blew up one of his bunshin in an attempt to kill everyone else around him after absorbing some of his clay though his mouth. However, his bunshin was teleported away from the scene by Kakashi. Deidara later returned after burrowing away from the scene and looked for his Akatsuki ring which he lost due to Kakashi's attack. Zetsu and Tobi both expressed surprise that Deidara was still alive when they found him after discovering Sasori's death. Deidara is presumably still a member of Akatsuki, because he had successfully accomplished his mission to capture Gaara.
Before joining Akatsuki, Deidara was a terrorist bomber for hire, seeing it as an opportunity to use his "art" on a regular basis. He was involuntarily recruited by Itachi under the orders of the leader. While he becomes accustomed to Akatsuki, he continually holds a grudge against Itachi and longs to defeat him to prove himself. After joining, Deidara is partnered with Sasori, who he refers to as Master Sasori. Deidara respects Sasori as a stronger fighter and great artist, thought he two disagree on what fine art is. Deidara holds that art is transient, departing quickly. Sasori believed that fine art is something wonderful that's left long into the future. This reflects their individual natures (Deidara makes clay sculptures that explode, Sasori makes long-lasting puppets out of humans). After Sasori's death, Tobi is assigned as Deidara's new partner. Deidara gets impatient with Tobi fairly easily, since Tobi rarely pays attention to what he is saying. Tobi's inattentiveness often results in Deidara attacking him in some way, either with his exploding clay or an attempt to suffocate him. Despite this hostile relationship he has with Tobi, Deidara has formed a student-teacher connection with him; Tobi even refers to him as "senpai". Once in battle the two prove able to work well together, with Tobi doing Deidara's bidding and Deidara using caution when his exploding clay gets too close to Tobi. Prior to blowing himself up, he apologizes to Tobi for what he is about to do.
After hearing of Orochimaru's death at the hands of Sasuke Uchiha, Deidara, angry that someone other than himself killed Orochimaru, sets out with Tobi to seek revenge against Sasuke. Upon finding Sasuke, Deidara quickly starts to fight him, though Sasuke's abilities and Sharingan allow him to avoid the worst of Deidara's clay explosions. Enraged that Sasuke, like Itachi many years earlier, is using his Sharingan to defeat him, Deidara attempts to use his C4 explosives to kill him and prove that his art is better than that of the Sharingan's. Sasuke once again avoids the blasts, and Deidara is left out of chakra and thus unable to create more explosives. In a last ditch effort to kill Sasuke, Deidara uses the mouth in his chest to turn himself into a bomb in the hopes that he can take Sasuke with him. His effort proves unsuccessful, and Akatsuki mourns his loss.