Bulkhead Autobot

Wheeljack is Bulkhead's best friend, with whom they served in the same squad, the Demolitionists.
Miko Nakadai, whom Bulkhead cares for very much and has taken on the role of guardian.
Breakdown is Bulkhead's worst enemy.

One of the strongest Autobots on the team, he is capable of withstanding serious damage and demonstrating considerable physical prowess. Bulkhead is kind-hearted and sensitive. His menacing exterior conceals a gentle and sensitive soul. Bulkhead is easily moved to compassion, willing to help even those he has just fought. He is loyal to the team and is ready to defend his comrades to the bitter end. Bulkhead also shows concern for Miko Nakadai, his human friend, whom he takes on as his guardian. He treats her tenderly, allows her to boss him around, and sometimes helps her skip classes. Bulkhead has a low tolerance for those who bully the weak. Perseverance and determination. Bulkhead never gives up and is willing to sacrifice himself if necessary. Despite his physical strength, Bulkhead is not known for his high intelligence, which often becomes the butt of jokes among the other Autobots. Due to his size and background as a construction worker, Bulkhead often drops, breaks, and smashes things. This can be annoying to those around him, especially Ratchet. In his free time, Bulkhead prefers to spend time actively: playing ball, wrestling, and so on.

Bulkhead is afraid of harming more fragile creatures, but his friendship with Miko helped him overcome this fear.
On Cybertron during the Great War, Bulkhead served in the Havoc Squad. His past left him psychologically scarred by his participation in brutal missions.

In operation mode
Height: 9 meters.
Body color: Green, with gray and black elements.
On the back: Wheels are located.
Build: A large, bulky, and somewhat clumsy mechanoid. It has a powerful chest and shoulders, short legs, and large arms.
Shoulders: Heavy, darker green.
Head: Appears small relative to the body, with a heavy, protruding lower jaw. The helmet is smooth, and the body has no predatory or protruding elements.
Face: Kind, with clear blue optics.
Alt-form: Hummer-HX SUV.
Weapons: Armored fists, each of which has a powerful laser cannon mounted on it.
He looks huge and menacing, but in reality he is good-natured, caring and gentle at heart.

On Cybertron, Bulkhead worked as a construction worker, and with the outbreak of the Great War, he joined the Havoc Squad. During his service, he met Wheeljack, who became his close friend.
Bulkhead later joined Optimus Prime's squad to assist him in one of the battles. He believed Optimus could end the war with the Decepticons.
Bulkhead has fought numerous battles with Decepticons, including Breakdown, Starscream, Hardshell, Dreadwing, Shockwave, and Megatron.