The ONE I just know that there is Yu-Gi-Oh R (Manga) and with the spell card "Divine Evolution" Obelisk the tormentor evolve to Obelisk the progenitor. You can see his new form in an alternative TCG Card. So there is big difference between these two Obelisk.
If Jaden/Yubel have voice lines for Neos Fusion - Brave Neos - Grandmerge, mah Kaiba boy at least will have voice lines for some BE cards (like White Stone).
The summon animations are usually for monsters that have appeared in the TV anime (in this case, the DSoD movie). I think Mokuba used Hungry Burger in the manga? or something about a Burger Roulette...? idk i didnt really read the manga