|Family and Relations||Unknown|
|First Appearance||Great Mazinger episode 22|
Gasrose has a mostly dark blue scheme in its belly, head, and legs. Its neck is brown, its shell is made of rock-colored plates, and it has a large gray tail. It's size is comparable to a small island, making it bigger than most Warrior Beasts.
Abilities and Equipment Edit
Due to its large size, Gasrose can ram into targets and stand up to swat the enemy away, it can use its mouth to make tsunamis and its tail can electrocute enemies when close, it also has a small-scale volcano on its back that explodes and its shell reassembles.
When General Angoras and General Julicaesar paired up to make a base on an island, Angoras launched Gasrose who made tsunamis to trap those in the Science Lab. After which, Great Mazinger was launched to find out the origin of the tsunamis. Then he finds Gasrose and then chases him into the sea with Gasrose redirecting his attacks. The Great is electrocuted during the fight making the robot fall to the sea floor. Then Gasrose goes to the newly submerged Science Lab, ramming it and electrocuting it. Tetsuya wakes up in time and chases Gasrose with Great Mazinger out to land. After various attempts with Mazinger Blade, he cuts Gasrose's head in half and he explodes.
- Gasrose is based on Gamera, another giant city destroying turtle from Japan.
- Gasrose had the integrated brain in the head, something rare for Warrior Beasts.