This is an old one of mine, that I'm going to repost here
An enormous arthopod serpent monster, Scylla is the backbone of the monster's presence in shear's depths. When on land, Scylla holds herself up on two legs using two Spring loaded bashing arms in combat. When in the sea, Scylla propels herself with a paddle shaped tail
Scylla is a burrowing beast. Capable of digging into sediment to hide and bypass obstacles that may be unclimable. She has higher damage resistance when not moving and only her eyes stick out of her tunnel. She has 5 movement charges and they do not regenerate underground.
Air Blast: Scylla hits her arms together, creating a powerful attack in a straight line. Base damage dealer
Fastball Special: Grab a hunter and then aim them at either a wall or another hunter. Less damage is done if they hit and another hunter, but damage is done to 2 people. You can also be a dick and throw mammoth birds at them. Or Blitzers/Venomhounds.
Riptide: Launch a wave that deals knockback damage, that then comes back and pushes hunters towards Scylla unless they can get out of the way.
Numbness: Pricking a hunter with her Poisonous tongue, the hunter's health bar no longer changes depending on his/her health for the hunters (Monster still see's changes). This means she/he may not register damage taken and keep fighting even though his/her health is critically low. Unsure about this one
The head is in the shape of a hammerhead shark, but it's insectoid and has compound eyes.
The Arms belong to a mantis shrimp. She has 4. Two club like smashers and 2 arms for locomotion.
The body is akin to a bobbit worm. The Tail is shaped like a paddle.