Why does Deidara hate Tobi?

Answer 1

well, HATE is a strong word but perhaps nearly close enough for Deidara's view on Tobi.
Deidara dislikes Tobi as he believes all Akatsuki members should act serious and calm not relaxed and goofy.
I think personally, Deidara was just disappointed when he lost his first partner Sasori and had to work with Tobi.

BUT Deidara does show minor respect for Tobi, as seen before his death, he apologizes to him~

Answer 2

Because Deidara didn't want to be in Akatsuki, and Itachi said if he beat him, they'd leave him alone. However, Itachi easily defeated him, and so Deidara had a huge blow to his ego and carried a grudge against the Sharingan and Itachi for the rest of his life.

Answer 3

Neji initially hated Naruto for backing up Hinata, someone who Neji viewed as a failure. Neji was also disturbed by the fact that he struggled in his fight against Naruto, whom he felt was not a genius like him.

Answer 4

He doesn't necessarily want to kill Naruto. He just wants the Nine-Tails from him, so he can make the Ten-Tails. on the other hand, extrication of the Nine-Tails is fatal. The only reason Gaara is still alive is because Lady Chio gave him her life energy.

Answer 5

no he hated the main branch and blamed them for killing his father.