Changes
→History
Yako along his twin brother, Gekko were orphans adopted by Pegasus to be trained as his protégés to be potential heirs to his company, I2. It became apparent the Tenma twins were considered Pegasus' favorites amongst the adopted children, and they clearly were the most attached to him. One day prior to Duelist Kingdom, Pegasus discussed his plans of taking over [[KaibaCorp]] and reviving [[Cyndia]]. Unfortunately, this dream would never come true, and it was also the last time Yako would see his mentor alive. At some point after The Duelist Kingdom Tournament, he found Cyndia's card covered in Pegasus's blood, causing Yako to freak out.
In anger, Yako demanded [[Mr. Crocketts]] tell him who did this, and not knowing what happened to Pegasus, he revealed that [[Yugi]] defeated him, giving Yako a target. In revenge, Yako locked himself in his room to research in the mystic science, which includes the [[Millennium Items]], especially the [[Millennium Eye]], and the designs of very powerful and evil cards that Pegasus left behind, but did not produce due to fear; Yako used his researches to complete them, and named them the [[Wicked God]]s, which slowly corrupted him.
==Personality==
