Hate Bear

The Hate Bear is a monstrous white bear that grows to three metres in length. It is the only known species of bear-mutant to not have a typical head. The Hate Bear's fur thins out near the top of the chest, revealing a great muscular maw, surrounded by spiky tentacles that seek to grasp, ensnare and then swallow prey.

The tentacles of the Hate Bear move and seem to track prey without any visible eyes. They respond to sound and can elongate to the length of the Hate Bear. A deep bass growl echoes up from the pit of the stomach. Encountering humans and other sentient species, the Hate Bear tends to only attack if surprised, otherwise it will snarl, growl and posture to intimidate. If weakness is shown too quickly, the Hate Bear will attack. If a bear is encountered with a cub it will fight to the death to protect the little one.

The fur of Hate Bears is extremely flammable; the shoulder blade and chest bones of bears are quite valuable, as they can be fashioned (by a skilled armourer) into a flexible armour that is as tough as chainmail but as light as leather armour.

Hate Bear (originally designed for play in LotFP)

Found "Somewhere North"; icy, snowy conditions. Lives in caves.

AC16 (equivalent to chainmail)

5HD

Can swipe big paws twice (2 attacks) for d8 damage each but at -2 to hit. After a successful swipe and if close can try to grapple with tentacles at +2 to hit. No damage, but restrains successfully trapped prey; will not attack but will attempt to swallow on next turn. Very difficult to escape. Swallowed victims will take d4 crushing damage and d2 acid damage (damages armour first).

A Hate Bear cub has AC12 (no armour), 2HD and only one swiping attack that does d4 damage. It's too small to grasp and swallow, but has tentacles. All Hate Bears have 2d4 spiky tentacles.

TL;DR - a huge polar bear with the pre-Special-Edition-Sarlacc's maw instead of a head!