What’s funny about Seto Kaiba being a skeptic is that between various
adaptations, he or some version of him has possessed at least 3
In Monster Capsule GB, he has the Millennium
Ring (or, more accurately, it had him.) In Forbidden Memories,
modern-day Seto has the Millennium Rod, in the anime he briefly
possessed Pegasus’ Millennium Eye, and in the Memory World arc Priest
Seto wielded the Rod.