Ernst Zimmerman

Ernst is the interim president of the Federal Republic of Giad. He was a former imperial general disillusioned by the Giadian Empire's policies. He led the revolutionary forces to victory against the Empire, becoming the first president of the Federacy.

He is also the adoptive father of Frederica Rosenfort and later, the five survivors of the Spearhead Squadron.

(Source: 86 - Eighty Six Wiki)