A bit more progress with this one :P

So far, Liz was the easiest to catch for the tentacles, they just had to strike her forehead so start sucking her brains.

Helena put way more fighting, that's why the tentacles first grabbed her by an arm which it assimilated, so while she was recoiling in pain, two tentacles latched on her head, one by her temple and another one straight into her eye.

The third cutie here is Uranus, being a half-dragon hybrid, she was basically nigh invulnerable, she fought bravely, until two more tentacles touched her eardrums and sucked with all their power, now the dragongirl can only moan softly while her head is drained...