"Subaru Okiya", "Dai Moroboshi", and "Shuichi Akai" are all references to Mobile Suit Gundam character Char Aznable. The “Akai” (meaning red) part of Akai’s name refers to Mobile Suit Gundam character Char Aznable’s nickname “Red comet.” “Shuichi” is a reference to the voice actor of Char Aznable, Ikeda Shuichi (who incidentally became Akai’s voice actor too). Dai Moroboshi, the alias Akai used while he was undercover in the Black Organization, comes from part of Char's real name, Casval Rem Deikun, with "Dei" pronounced as "Dai" (ダイ) in Japanese. In Moroboshi (諸星), the first kanji can be broken up into 言者 which when pronounced as げんしゃ (gensha) sounds very similar to the word for "phenomenon" (genshou). The second character (星) means "star". Moroboshi, read as "Star phenomenon" references falling stars or maybe comets. “Subaru Okiya” is a pun on Char Aznable’s real name which is キャスバル “Kyasubaru” (romanized as 'Casval').