© Konami 1993 -- ¥?
Another Konami Beat-em-up, this game has a super cameo.
Near the end of the game, as you are infiltrating the enemies HQ, you will find two arcade cabs for the baddies to play.
One is the classic Konami hit, Penta the Penguin, and the other is the ancestor of Gradius, Scramble.
Thanks to King Moai