Double Dragon / ダブルドラゴン (Game Boy - 1990)
Cover art for the Japanese version (Source: signature found on the artwork)
Double Dragon 3: The Rosetta Stone / ダブルドラゴン3 ザ・ロゼッタストーン (Arcade - 1990)
Flyer illustration (Source: signature found on the artwork)
Double Dragon II: The Revenge / ダブルドラゴンII ザ・リベンジ (Arcade - 1988, Famicom - 1989, Mega Drive - 1991, PC Engine CD - 1993)
Flyer illustration / cover art (Source: )
Double Dragon
Double Dragon 3: The Rosetta Stone