Zyudenryu Gabutyra

Zyudenryu #1 Gabutyra (獣電竜一号 ガブティラ, Jūdenryū Ichigō: Gabutira): the Tyrannosaurus rex-themed Zyudenryu who became Kyoryu Red's partner.

King
A Zyudenryu, Gabutyra was a Tyrannosaurus that agreed to be modified to battle the Deboss Army in ancient times. In modern times, he was awoken by Torin once more when the Deboss Army returned on Gabutyra's island, where Daigo Kiryu had just battled several Zorima. After the Zorima were dealt with, Gabutyra expressed interest in Daigo.

One long month later, Daigo finally defeats Gabutyra by blasting him from within his jaws, but Gabutyra strangely didn't offer him his partnership, getting a concerned Torin to take Gabutyra's drained Beast Battery to recharge it.

Later on, however, Gabutyra went after Debo Hyogakki in Japan, who was the one that destroyed the dinosaurs by causing an ice age, but without a Beast Battery, he was overwhelmed by the Giant Zorima, and was frozen by Hyogakki. Daigo soon arrived and once again bravely fighting off Zorima and came to help, putting himself at personal risk, and was nearly frozen by Hyogakki had not Gabutyra took the shot for him

Daigo said that he knew the reason why Gabutyra didn't make him a Kyoryuger in the beginning: because Gabutyra was a survivor of the Deboss Army's first attack, and didn't want Daigo to get hurt because of them. However, the human reminded the Zyudenryu that he is the man that had bested him, so he pledged that the both of them destroy Hyogakki, reinvigorating Gabutyra, and allowed Daigo to become a Kyoryuger, and later avenged the dinosaurs by killing Debo Hyogakki.

Kyoryuzin
When Daigo gained new comrades in Kyoryu Pink and Kyoryu Blue, Gabutyra manifested for the first time the ability to bring his fellow Zyudenryu together into a formation known as Kamitsuki Gattai Kyoryuzin. .

Overview
Gabutyra forms the base of Kyoryuzin, including the head, torso/shoulders, and the lower body, thus Gabutyra is the only Zyudenryu to be in all of Kyoryuzin's combinations. This Zyudenryu normally resides in the volcano of a jungle island in the southern seas until summoned.

When assuming Battle Mode, the crest feathers on the back of Gabutyra's head are raised.

In theory, Gabutyra would be able to change into its Kyoryuzin shape without other Zyudenryu attaching to it, becoming essentially an armless Kyoryuzin. However, unlike AbarenOhJi which lacks Blastasaur Pteranodon, the armless Kyoryuzin would have little to no combat capabilities compared to Gabutyra thus forming it would be entirely pointless.