However, some fans speculate that the headband might represent Soul's growth and development as a character.
* Early series: His headband is plain black, mirroring his initial cool, aloof personality.
* Later series: The headband gains more details, like the white stripes and the red eye, reflecting his greater emotional depth and his struggles with his feelings for Maka.
It's important to note that these are just theories. The actual reason for the headband's changes is likely just Okubo's artistic choice to create a more dynamic and visually appealing character design.