If we are talking about the Hidan in Naruto, there are alot of reasons, one bieing his condition. Hidan isn't dead he's immortal. So he is going to spend eternity in the ground in peices. He just can't be put back together.
Yes Hidan Did come back to life and so did KakuzuKabuto found Hidan and healed himKakuzu managed to steal the Naruto Shadow Clone HeartSo they came back to life
Kakuzu, Hidan, Deidara, Sasori, and Itachi Uchiha.
Brought Back to Life was created in 1992.
The scientist have not brought back to life the mammoth but they hope to do so by 2060.
Gohan did be brought back to life
Lazarus was brought back to life by Jesus to demonstrate his power over death and to show that he is the Son of God.
Nobody did.
Brought back to life.
Where have you been? Sasori is dead, Sakura killed him with the help of lady Chiyo. Deidara dies in episode 115 because of Sasuke. Pein dies but then is brought back by Tobi i believe. Asuma dies because Hidan used a jutsu that killed Asuma. Hidan dies because Shikamaru killed him because Asuma was his teacher. Gaara dies but is brought back by lady Chiyo in exchange for her own life, so she is dead to. There are more but i can't think of their names. There is over 14 people that have died in the episodes seen so far. i named 7. That should help you out a bit.
no
Isis, His wife
Juno