

Something being off about Shiro is a mystery that has simmered throughout the series ever since he last escaped Galra capture. The season 5 finale hinted that it was the Witch Haggar who was attacking Shiro's mind, and in the first episode of season 6, Shiro experiences just such an attack at the worst possibly time, imperiling a mission. But Shiro's been getting worse, and the frequency at which he experiences weird visions has increased. In spite of that, he still managed to be the leader Voltron needed, unifying the team and helping them to grow into a formidable force.

Shiro has been on a tumultuous journey since the series began, having been repeatedly kidnapped and tortured by the Galra, which as a result, has him suffering from stress and PTSD.
