One piece: Blue Beetle

Ryuuen transported in one piece world as an experiment subject in the lab of old scientist before vegapunk, and attacked by a strange, mechanical creature known as Blue Beetle. The creature was in lab when it got on him. He suddenly felt a strange energy coursing through his body. To his amazement, he found himself wearing a suit of armor that resembled the Blue Beetle's exoskeleton. The armor granted him incredible strength, speed, and the ability to fly, and other advanced weapon. "Booyah! This thing is ridiculous."