Yes. An unknown amount of time ago, Yubel and a boy (Jaden in a past life) swore to love each other forever.
Chat with our AI personalities
We don't know because there is an episode coming out 2011.
When Jesse gets sucked into a vortex into another world, yubel is in that world and takes over Jesse to get to jaden.
No, if the effect of "Yubel" is used on another "Yubel", you will not be able to Special Summon "Yubel - Terror Incarnate". This is because "Yubel" must be destroyed by an effect. The effect of "Yubel" that activates during your End Phase asks for you to tribute a monster, not destroy it.
Yubel was originally a boy when he was human
No.