 ~!Like Mian, Full Flat was one of Poseidal's former Temple Knights and was in love with him. Unlike Mian, Flat was unable to win Poseidal's love, but was given the independent asteroid base Theart Star due to all the help she provided him. Like Poseidal and Mian she possessed eternal youth, but as the decades passed she grew bored with her life and resentful towards Poseidal. Flat eventually seeks to take Poseidal down, first by allying with Giwaza Lowau, who was rebelling against Poseidal, and later heading down to Sveto herself to break Mian from Poseidal's grasp. It was during the second of these encounters where Flat's life came to an end when the L-Gaim Mk-II accidentally crushed her.!~  (Source: Wikipedia)

In the Pentagona System, a young man by the name of Daba Myroad leads a rebellion against Pentagona's leader, Oldna Poseidal. Daba's not alone however, meeting a large number of allies along his journey and having in his possession the powerful L-Gaim, a white Heavy Metal left to him by his father.
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(Source: Anime News Network)

A recap OVA that portrays the first half of the series Heavy Metal L-Gaim. After the credits, there is a short clip animated for the OVA entitled "Lady Gyabure", which is intended to be comic relief. 

A recap OVA that portrays the second half of the series Heavy Metal L-Gaim. After the credits, there is a short clip animated for the OVA entitled "Pentagona Doors", which is intended to be comic relief. 