Vash is the younger twin with a mole under his left eye. He's very energetic, kind, and helpful. Loves humanity very much. Vash can control plants. Nai is the older twin with a mole under his right eye. He's calm, collected, and silent. Hates humanity very much. Nai can control metal. Both twins are blond and have pale blue eyes; both are very protective of each other. Scientists call them Plants, artificial humans created in a laboratory. They are powerful and resilient.