Where is Leo Altman's hometown?

The hometown of Leo Altman is the L77 nebula in the constellation Leo (it seems to be right in the lion's right eye). Because the L77 nebula was destroyed by Magma Man and his Gemini monster, his parents were killed, his younger brother Astra was imprisoned, and Leo came to earth alone. Later, magma and Gemini monsters came after the earth, and Severn Altman (starring) was interrupted in the struggle with the three monsters. Leo (Gen Ohtori) comes to rescue Severn and expels three enemies. Later, under the persuasion of the regiment, Toyohara promised to join the MAC to defend the earth, so Leo's story began. ...

Leo has unprecedented fighting ability, and all the Altman fighting before (or even after) is inferior to Leo. Therefore, Leo is undoubtedly known as the mortal kombat in Altman.