Beelzemon can summon his Blasphemous at the command of his tamer to reach a higher level of power. This can be down through either Naomi, Zack or both.

I really love how the colours turned out for this, and the poses :)

Beelzemon, Digimon © Bandai, Toei Animation
Naomi, design, artwork © NotoriousNoire, NoireNotorious