The Miner is right at the beginning of level 8 in Zombotron 2. He talks with the player and seems to be drunk. He states that him and his fellow miners accidentaly made the bridge collapse while mining. Then he says the only way to the space base is through the mines, which have been overrun by evil robots.
He holds a pickaxe and wears a yellow hard hat, which covers his eyes. He is muscular and sways back and forth in a dazed way.