The dragon is on the left. On the right is earthworm.

Tianlong

Dr. Ye Shan has created an electronic combat robot.

it can become the appearance of Yeshan.

Dr. Ye Shan, a lumbricus, has created an electronic combat robot.

you can become like Yeshan Ryuji.

sergeant hosoda, colonel Marui

both officers in earth defense force

Yuezi Shirakawa: Lieutenant earth defense force, and he has a good relationship with the Yeshan family. At Kenji's birthday party, Dadaxing people attacked and took away Dr. Yeshan's Long Zhi and Rangji, and she has been taking care of Kenji. Later, after Ssangyong came to earth, their relationship was also very good, and she also helped Ssangyong many times.

Kobishu: It was also Dr. Yeshan who made the robot to help the two dragons in the world. It also helped Kenji and Yuezi a lot after coming to the earth.

Dr. Ye Shan: A scientist. Dadaxing people arrested him, Long Zhi and Rangji, and wanted to use them to serve Dadaxing, but he was worried about the safety of the earth, and created the universe iron man world Shuanglong to protect the earth.

yoshiji yeshan: the eldest son of Dr. yeshan and the eldest brother of Kenji.

Takashi Yeshan: the second son of Dr Yeshan and the second brother of Kenji.

Dr. Haitang: A scientist who is trying to find out the secret of the riddle song that can defeat the Dadaxing people, was also blocked by the Dadaxing people many times when he was looking for him by the Shuanglong. Later, Dr. Haitang cracked the secret of the riddle song and made great contributions to the elimination of the Dada Star Army.

Kenji Yeshan: the son of Dr Yeshan, and the younger brother of Ryoji. Ssangyong often teaches him, and he likes Ssangyong very much. However, his personality, sincerity and willingness to make friends with others, is precisely because of this, and has been used by Queen Gabriel many times.