SBS Time!
Lunatic-Over'9000'Lord: Why does Merlin have energy blades?
Game2002: The Prismriver Sisters can do something like that in Touhou 7.

Rumia
Head Treat
Rumia pushes Mystia on her front and pins her down by the back of the head. Using her other hand, Rumia digs into Mystia's back and rips out her spine, taking with it the night sparrow's head. Holding the spine and head in her hands, Rumia feasts on the latter.

Intestinal Delicacy
Rumia disembowels Mystia using her nails and then strangles her using her small intestine. In the middle of doing so, she takes a huge bite out of the night sparrow's neck, including the intestine around that part, and then drops her onto the ground.

Mystia Lorelei
Mysty the Butcher
Mystia takes out a butcher knife and splits open Kisume's head. After Kisume falls on her back, she proceeds to cut her up as if she is butchering an animal.

Bird of Prey
Mystia uses her sharp claws to slash Kisume in the waist multiple times. She then flies above the latter, grabs her by the shoulders, and lifts her into the air. Mystia then shakes her until her lower half detaches from the body due to the slashing earlier, and some of the organs in her upper torso also fall out.
Note: I got this idea from watching Baraka's Animality in MK3.

Kisume
Barrel Crusher
Kisume throws her bucket into the air. It falls back down on top of Shizuha at a much larger sizer, crushing the goddess underneath.

Bucket Grinder
Kisume's bucket grows in size slightly and floats into the air with its opening facing Shizuha, and a grinder appears inside it. It starts to suck Shizuha inside, and the goddess tries to escape, only to fall on her front and get pulled into it feet first. She screams in agony as the bucket grinds her flesh and release her grounded remains from the back. When the head is almost going into the bucket, Kisume rips the former off the body and then places it on top of the pile of grounded flesh.
Note: Both Kisume's fatalities are throwbacks to the goofy and nonsensical fatalities found in Mortal Kombat 3. She beheads people as part of her lifestyle, so I find it fitting for her to do things like this, but I can't come up with good enough fatalities, so I decided to go crazy with the bucket.

Shizuha Aki
Autumn Cleaning
Shizuha takes out a pair of leaves and slashes the front part of Yatsuhashi's body multiple times with them. She then gets behind the living string instrument and kicks her in the back, causing the front part of her body to tear open at the parts that were previously cut, and most of her organs and ribs come flying out onto to the ground. She takes a few steps forward before falling over on her organs.

Drop Kick of Fall
Shizuha runs at Yatsuhashi and leaps forward, hitting her in the chest with both feet. The kick is so powerful that her legs go through the latter's body and push the lungs out of the back completely. While holding up her body in the air using her hands, Shizuha spread open her legs to tear her feet out of the sides of Yatsuhashi's body.

Yatsuhashi Tsukumo
Music of Killing
Yatsuhashi binds Doremy with energy strings. The baku screams as the glowing strings bring stinging and burning pain to her. Eventually, Yatsuhashi tightens the bondage so much that the strings cut her into pieces.

Vibration Destruction
Yatsuhashi shoots several strings into Doremy's body. The strings then vibrate really fast, causing Doremy's organs to feel a large amount of pain, so much that she starts coughing out blood. With a powerful yank, Yatsuhashi pulls out almost every single organ underneath the head, and they are all ruptured by the vibration.

Doremy Sweet
Bitter-Tasting Dream
Doremy stuffs her pink blob into Rumia's mouth. As if it has a mind of its own, the blob enters Rumia's body by itself. The demon then suffers from an intense stomachache, to the point where she feels like her stomach is going to explode. A few seconds later, she explodes into pieces, and the blob is seen floating in the air where her stomach is supposed to be.
Note: This was originally going to be inspired by Sindel's Mouthful, but I ended up making it somewhat different.

Claustrophobic Dream
Doremy's blob grows in size and then splits open to catch Rumia inside it. The blob begins shrinking, crushing Rumia inside it as a result. It shrinks until it is about three times its original size, and then it splits open from below to drop a ball of flesh with Rumia's face attached to one side of it.
Note: This is inspired by Triborg's Death Machine.