Talk:Composite Black Dragon, Bahamut Death Tallica/@comment-24915410-20170101162222/@comment-3974145-20170101163559

Focus on the word "Synthesis"

In the anime they mention that most of the Dual Monsters are Artificially created meaning I would bet that this is just a lab experiment fusing Bahamut and Death Tallica. So the Polymerization guess is close but not exact XP