Changes

In the anime, Pendulum Monsters were created when [[Zarc]] and [[Ray Akaba]]'s wills reacted to each other when the [[Original Dimension|world]] was split into four during their duel. [[Yuya Sakaki|Yuya]]'s Pendulum Monsters were originally Effect Monsters, but they were transformed by the power of [[Yuya's pendant]] into their current statewhen Zarc awakened for the first time. After Yuya's initial discovery of Pendulum Monsters, [[Declan Akaba]] started a project within the [[Leo Corporation]] to create more Pendulum Monsters so that the entire world can have access to them. The first prototypes were unveiled in Declan's first duel with Yuya, but the summoning energy they gave off was unstable and so they malfunctioned. Also, these initial prototypes couldn't quite match Yuya's Pendulum Summon in terms of energy. Although they managed to stabilize their Pendulum Monster's energy in time for the [[Arc League Championship]], it is was never directly stated whether or not the finished Pendulum Monsters were as good as Yuya's. When a Pendulum Monster is placed into a Pendulum Zone, it appears in a transparent column of blue light from a portal on the ground not dissimilar to the Summoning of monsters in ''[[Yu-Gi-Oh! 5D's]]''.