Taizo Hori (ホリ・タイゾウ Hori Taizō), originally known as simply Dig Dug, is the protagonist of the Dig Dug video game series, and a major character in the Mr. Driller spin-off series. He is the chairman of the Driller Council and the founder of Team Star Trigon, and is also a member of the United Galaxy Space Force organization. Originally married to Masuyo Tobi, the protagonist of Namco's Baraduke, he would since divorce with her, but not before having three sons - Taiyo Tobi, Ataru Hori and Susumu Hori, the last of which would become the main protagonist of the Mr. Driller series.
Dig Dug has fair skin and wears a white and blue helmet with red studs on the sides. On his suit is a red arrow pointing down. He wears blue gloves and boots. He is still seen with his drill.