Grigio

Grugeo Bone (グルジオボーン), also known as Grigio Bone (Grigio means "Gray" in Italian), is a red skeleton-like kaiju that appears in Ultraman R/B. He is said to be a ferocious monster with unlimited strength.

Subtitle: Flame Bone Beast (火炎骨獣)

Stats

 * Height: 50 m
 * Weight: 62,000 t
 * Origin: Ayaka City

Ultraman R/B
Grugeo Bone was a mythical monster featured in legends of Ayaka City, crashing to the Earth in a meteorite with Ultraman Rosso and Ultraman Blu 1300 years ago. He attacked people who were at war at that time, devouring them. He was given the name Grugeo-sama and was feared as a monster lurking within "The Curiosity Stone".

In the present, Grugeobone was resurrected (or summoned) by the power of a Kaiju Crystal by someone using a R/B Gyro. First spotted by a couple taking photos, the footage of him was dismissed by Katsumi as CGI until Isami revealed his device had detected the monster's activity as well.

A fierce battle began in Ayaka City, with Grugeo Bone fighting against Rosso and Blu who were seemingly inexperienced in battle. In the end he was struck with the brothers' Flame Sphere Shoot and Aqua Stream and exploded.

Trivia

 * Suit Actor: Hiroyuki Arai.

Powers and Abilities

 * Meteor Travel : Grugeo Bone is able to travel through space as a fire sphere.
 * Bone Breather (ボーンブレスター): Grugeo Bone's primary attack where he spits flames of up to a million degrees out of his mouth.
 * Acceleration Ability : Grugeo Bone has an ability to run at a fast speed.