This game is known outside Europe as "Contra
Here are the official names of the characters : Bill Rizer (player 1) and Lance Bean (player 2).
Bill Rizer makes an appearance as a supporting character in the 1992 Nintendo NES/Famicom game "Wai Wai World 2 SOS.. - Paseri Jou" (A.K.A. "Konami World 2 - SOS from Parsley Castle").
The music from the final stage is also used for the final boss confrontation in "Wai Wai World" (A.K.A. "Konami World" ) for the Nintendo NES/Famicom .
Chad Johnson holds the official record for this game with 1,546,600 points on July 15, 2002.