Diablo

Diablo is the raven familiar of Maleficent and the secondary antagonist from the 1959 film Sleeping Beauty. His squawks were provided by Dal McKennon and currently by Frank Welker. He appears to have a similar role to The Queen's Raven in Snow White and the Seven Dwarfs. However, this raven plays a larger role in the storyline and he is in almost every scene that Maleficent appears in. In addition, unlike the raven in Snow White, Diablo is completely and genuinely loyal to Maleficent.

Sleeping Beauty
Diablo is first seen with Maleficent, crashing Princess Aurora's christening. There, Maleficent casts a spell on the princess that schedules her death to come at her sixteenth birthday when she pricks her finger on the spindle of a spinning wheel. After the curse was set, Diablo and Maleficent departed. Oblivious to the villains, Maleficent's rivals Flora, Fauna and Merryweather changed the curse so that Aurora would only fall into a deep sleep when she pricks her finger. Meanwhile, back at the Forbidden Mountains, Maleficent sends her goons on a hunt for the princess but fail to find her after sixteen years. It is revealed that they were looking for a baby for the entire sixteen year hunt. Maleficent explodes in rage and sends Diablo to find her. Diablo begins his search in the forest where he spots magic from wands being blasted out of a chimney. The magic is from Flora and Merryweather who have been hiding Aurora in their forest cottage to keep safe from Maleficent. Diablo quickly sends Maleficent the news and the villains attack but capture Aurora's husband-to-be Prince Phillip instead. They hold him hostage in Maleficent's castle but the Three Good Fairies break him out. Diablo quickly rallies the goons to attack. They goons stand no chance against the fairies' magic however, so Diablo heads for Maleficent's quarters. Merryweather loses her cool with Diablo and turns him into stone. However, upon witnessing Diablo as stone, Maleficent catches on to the situation and jumps into the battle herself.

House of Mouse
Diablo made frequent cameos as one of the guests on House of Mouse. He is perched on Maleficent's shoulder in all of his appearances. In the episode, Halloween with Hades, Diablo doesn't seem to like Hades and even tried to bite his finger. Diablo also appears alongside the villains in Mickey's House of Villains.

Kingdom Hearts series
Diablo is a minor antagonist in the Kingdom Hearts series, mostly seen on Maleficent's shoulder.

Kingdom Hearts Birth by Sleep
Maleficent appears in Kingdom Hearts Birth by Sleep, his role down graded to that of a cameo antagonist, only this time in his home world of Enchanted Dominion.

Kingdom Hearts II
Diablo, brings Maleficent's empty robe to Yen Sid's tower, and the memories of Flora, Fauna, and Merryweather accidentally bring her back to life. Later on, Pete travels to Hollow Bastion to see if the rumors of Maleficent being killed off was true. Just then, Diablo and the revived Maleficent arrives.

Kingdom Hearts 3D: Dream Drop Distance
When Maleficent abducts Queen Minnie, she gives Diablo Minnie's crown as well as a letter to be delivered to Mickey to lure him back to the castle.

Maleficent
Diablo will appear in the film under the name of Diaval. He is Maleficent's right hand man and is actually a raven who can take human form.