Star Musketeer Bismark

is a Japanese mecha anime television series created by Studio Pierrot and aired on Nippon TV and its affiliates from October 7, 1984 to September 25, 1985.

In 1986, the rights to Bismark were sold to World Events Productions (WEP) who reorganized and rewrote the series, incorporating most of the original episodes and creating six new ones before releasing it under the name Saber Rider and the Star Sheriffs.

Plot
In the year 2069, humanity begins to terraform and colonize the Solar System. In order to protect the colonies and maintain law and order in the solar system, the Earth Federation Government (EFG) was created. Soon, many settlers started to resent the EFG and its sphere of influence, straining the relationship between the central government and the colonies.

While a strained peace was being forged between Earth and the colonies, a race of non-human creatures known as Deathcula invaded the System in 2084. Without provocation, they attacked the colonies and killed many of the colonists. The EFG quickly realized that the Deathcula were technologically superior and their forces were hopelessly outmatched. In order to have a chance at survival, Dr. Charles Louvre developed a transformable starship known as the Bismarck. Knowing that an advanced team of specialists were required to operate the Bismarck, four individuals came together and were charged with keeping the outer colonies safe from further Deathcula attacks.