Player Two originates from Abobo's Big Adventure, however design-wise, he is based off Lance Bean, the deuteragonist of Contra, having a blue headband and red pants.
In The Game
Contrabobo Player Two is a secondary playable character in Contrabobo, that can be summoned, after being unlocked if the player does the Konami Code on their keyboard. The player can control him with the I button, and he shoots by using the O button. He behaves the same way, that Abobo in Contrabobo does, though you are going need a second player to control him.