Without Tatsuo Yoshida, Tatsunoko would not have existed. He was born in Kyoto in 1933, the oldest of three brothers. Since their Mother had passed away while they were all young, and their Father was out of the country in the military, Tatsuo took it upon himself to look after his brothers. He was an accomplished artist in his hometown, and made his living working for a local newspaper. However he realized that to truly make it, Tokyo was the place to be. .

Fortunately his style of drawing was well suited to the comic market,and he soon found himself needing help because of his increased workload. It was then that he called upon his two brothers, Kenji and Toyoharu to come to Tokyo.

The team was a success and soon all of the brothers were busy with work. Eventually, they chose the name "Tatsunoko" which means "seahorse" and began using that in their comics as the production name. The studio had been born.

Born in 1935, Kenji Yoshida eventually succeeded Tatsuo as President of Tatsunoko Pro. His career began when his eldest brother Tatsuo requested his help in Tokyo. When he arrived with younger brother Toyoharu, he took the role of manager for Tatsuo's various comic projects. Kenji remained on the staff of Tatsunoko when they made the switch from comic production into television production.

Following Tatsuo's untimely death in 1977, Kenji took over control of the studio. It was under his term as President that Gatchaman II and the Gatchaman feature film were done. Though these were successful, Kenji eventually handed the reigns over to his younger brother, Toyoharu for a while.

These days, Kenji has returned to Tatsunoko and he is actively involed in new productions. One of his latest projects was the remake of Mach Go Go Go in 1997.

Born in 1940, Toyoharu Yoshida is the youngest of the three Yoshida brothers. He arrived, along with Kenji, to help Tatsuo along with his art career. It soon came to pass though that Toyoharu was getting plenty of jobs on his own. To differentiate between himself and his famous brother, he adopted the pen name Ippei Kuri, which he still uses to this day.

When Tatsunoko began television production, Ippei's talents really began to shine. He ranged into most fields from character design, series planning, writing, producing and more. He took over as the President of Tatsunoko Pro. sometime in the 80s.

Currently, he holds the post of Vice-President and he is involved in producing and planning new series. Plus, he still does showcase illustrations for special projects.

Hiroshi Sasagawa came to Tatsunoko shortly after it began television production in 1965. He brought many strengths to the studio, chief of which was his love of the"Gag" or comedy style of animation. He loved the style and made it successful at Tatsunoko, ensuring his place among the most important employees. But, he was accomplished in other genres, and was just as well-suited to directing action and hero shows.

Among his many credits are the creation/direction, etc. of such shows as the original and the new Mach Go Go Go, Kurenai Sanshiro, Tamagon, Casshan, Gatchaman II, the Time Bokan series and many others.

He has been a staple at Tatsunoko Pro and is still at the studio helping to plan and develop new series.