Spinner achieved his immense size during the decisive Final War due to the acquisition of a powerful Quirk that drastically enhanced his physical form.
The Transformation Explained
During the climactic confrontations of the Final War, Spinner, whose real name is Shuichi Iguchi, received a Quirk known as Body Bulk from the notorious villain All For One. This specific ability granted him an extraordinary increase in scale and musculature.
Upon activating or receiving this Quirk, Spinner underwent a profound transformation, resulting in his towering stature and altered appearance:
- Immense Stature: He became several stories tall, making him an incredibly formidable and imposing figure on the battlefield.
- Muscular Physique: His body developed an exceptionally muscular build, reflecting the immense power and mass he gained from the Quirk.
- Color Change: His characteristic green scales darkened significantly, taking on a darker shade that visually emphasized his transformed state.
- Animalistic Appearance and Behavior: Along with his physical changes, he also began to act and appear much more beast-like, highlighting the raw, untamed power of his enhanced form.
This dramatic transformation was a direct consequence of the Body Bulk Quirk, turning Spinner into a vastly larger and more animalistic presence during the conflict.