Beetlejuice's vision swam. He slowly looked up, seeing Lydia's legs flailing. "Lydia," He groaned softly. He had to help her. His mother was going to kill her! She was going to take the one person he truly cared about away from him! He had to stop her. His eyes began to glow that familiar, angry red. He pulled himself up off the floor, tendrils of red hot rage emanating from him.

"What. Did. I. Just. Fucking. SAY!" He roared, and charged at the woman who had made his life so miserable. He began to shapeshift, but not into any particular form. The beast that replaced the striped demon was inky black, covered in hundreds of eyes, mouths, teeth, and tentacles, all colliding with the bane of his existence. 

BJ's mother shrieked when the monstrosity pummeled her. "Lawrence!" She cried. "What the fuck are you doing?!" 

Beetlejuice was too mad to answer. He was ripping and tearing at her from every direction. But another roar filled the room. The woman, too, began to shapeshift. She turned into a massive abomination with hundreds of arms that stretched across the room, and a mouth that could have easily swallowed Lydia whole. The two eldritch beasts engaged in battle, tearing limbs and chunks from one another, shaking the entire basement and probably the whole building.