Aldridge

"Billionth" Aldridge, also known as the Poison Demon, is the Leader of the Unit under the Kobushi Corporation. In terms of strength, he is the strongest member of the Unit and is widely regarded as the most powerful and feared man in all of Dinas. Along with "Hundred-Thousandth" Narro and "Millionth" Thomas, he is considered one of the 'enforcers' of the Unit, a category of fighters above the other Unit members. He, Narro, and Thomas are the real reasons the Unit is so feared.

He was defeated by Selena, Kuzo, Skellen and Joshua during the Dinas arc.