Ryu Ryu no Mi, Model: Brachiosaurus in One Piece

As the fruit hasn't yet been shown in the anime, we don't know a lot about its appearance.

The major strength of this fruit is that it allows the user to turn into a Brachiosaurus which is a very large and heavy bodied sauropod dinosaur from the prehistoric era. This grants them an immense boost in size and makes them bulky. As they have a very long neck, the user is able to reach targets that may be at a far distance. The user's immense weight can be used as a weapon too as they are able to easily crush anyone under them.

The Brachiosaurus has an ability in which they are able to separate their head, neck and tail from their body and make them act independently. The neck and tail form a snake like form and that can help them coil around opponents and crush them with the help of immense pressure. The rest of the body is of little use. As they're an Ancient Zoan-type, they have more strength and durability than the usual Zoan types.

This devil fruit doesn't have its own weaknesses, other than the standard devil fruit weakness, that is the inability to swim.

Queen uses his devil fruit abilities for combat purposes. As he is also a cyborg, Queen is able to augment his devil fruit abilities through his technical parts and uses them together whenever he is fighting. In his full form, he has many weapons that are equipped to his mouth and upper body areas which help him in combat. He also has two rocket launchers with him.

In his hybrid form, Queen's mechanical parts can be seen, like his arms turning into mechanical, clawed tentacles. He is also bipedal and is capable of wielding his Dao swords for combat. This is one of his most dangerous forms.

The techniques used by Queen are:

Brachio Bomber

In this technique, Queen dives from a high place and lands head first onto his opponents, crushing them under his immense weight when he is in his full form.

Black Coffee

In this technique, Queen is in his full form and he then fires a laser beam from his mouth or tail. When he is in his hybrid form, he can fire it from his mouth, mechanical arm, hair or tail.

Bridal Grapper

In this technique, Queen heats up his mechanical hair claw and grabs his enemies and burns them with it.

Bry Pan

In this technique, Queen rapidly punches with his hair claw, tail claw and left claw.

Brachiojaurus

In this technique, Queen lifts his tail and readies himself to launch his inner snake body from his torso and legs.

Q. What does Ryu mean?

A. Ryu in Japanese refers to a ‘dragon’, which is a mythical creature.

Q. Who ate the Ryu Ryu no Mi, Model: Brachiosaurus?

A. Queen, a crew member of the Beast Pirates, ate the Ryu Ryu no Mi, Model: Brachiosaurus.