Gigantic semi-sentient reptile (11d6) 

Great carnivorous predators evolved to eat anything in the universe.

STR 45 (9d6) AGI 10 (4d6) END 55 (10d6)
INT 10 (4d6) LOG 1 (1d6) WIL 21 (6d6) 
CHA 10 (4d6) LUC 3 (2d6) 

MELEE DEFENCE 36
RANGED DEFENCE 10
MENTAL DEFENCE 22
VITAL DEFENCE 50

HEALTH 220
SOAK 22; VULN none
IMMUNE none

INITIATIVE 6d6
PERCEPTION 6d6
SPEED 6; CLIMB 3; JUMP 20'/20'
CARRY 1000lb (max lift 2250lb)

REACH 15-ft
ACTIONS 4

Bite 11d6 (6d6+9 piercing damage)
Claw  9d6 (3d6+6 slashing damage)

Skills scent 10 (4d6),  hardy 4 (2d6), combat 10 (4d6), perception 3 (2d6), reactions 3 (2d6)
Gear -                                                                    

Opportunist stomp. Slatherbeasts can stomp on an adjacent prone opponent as a free action. This is an attack, and does 5d6 blunt damage.

Grab. Slatherbeasts can grab opponents of size Medium or smaller when making a claw attack.  A creature struck by the grab attack is Restrained and remains so until escape.  The slatherbeast can maintain two grabs at any time. Victims grabbed automatically take 3d6+6 blunt damage at the start of their turn.

Swallow whole. A Slatherbeast can transfer a grabbed victim to its mouth with a further attack.  If this attack fails, the victim is dropped and escapes. If it is successful, the victim is swallowed whole, taking 5d6+7 piercing damage in the process. The interior of a slatherbeast is intensely hot, causing 4d6 heat damage per round to the creature's victims.  Escaping from within is almost impossible, given the beast's armoured stomach (its SOAK applies within, also) designed to eat anything in the universe, but if that SOAK can be exceeded, then 20 damage in single attack will free the swallowed creature. If still alive, a swallowed creature can be freed from a dead slatherbeast; the heat damage ceases upon the slatherbeast's death.

Roar. Slatherbeasts can unleash a roar so loud that its victims are stricken with fear as a 6d6 mental attack within Burst 11.  Victims successfully attacked are made Afraid. This attack affects any within range who can hear the creature, whether or not they can see it.

Quake. The creature slams a foot, fist, or tail on the ground, shaking the area within 6 squares. The creature makes a 6d6 melee attack against everybody within the area, knocking targets prone and doing 1d6 damage to them.

Sentience. One in a thousand slatherbeasts are sentient, with LOG attributes of 4 (2d6) and the ability to speak.  Some slatherbeasts are domesticated and used for warfare - these creatures are frequently armored and trained, gaining the tactics skill at 3 (2d6) and a SOAK of 20. There are even rumours of highly intelligent, psionic slatherbeasts.