Rats Of Unusual Size (ROUS')
(Courtesy of Aaron R, Ash Law, and Graham Poole on G+)
Ratlings are like skaven, if you're familiar with Warhammer Fantasy. About 3 foot tall, look like a humanoid rat. They are the result of long ago magical experiments that managed to escape and breed true. Common to sewers, living dungeons, and other underground areas. Vermin, but very cunning and dangerous vermin as they have a super natural ability to control rats. Don't get along with wererats. Often speak broken common.
Larger than their swarming brethren, these ratlings haven't made the evolutionary jump to walking on two legs, and instead scurry around on all fours looking for food and whatever else it is they desire. Most folks don't actually believe they exist.
Level 1 troop
Initiative +5, HP: 27
Snapping Jaws: +6 vs AC, 5 damage
Natural Even Hit: +3 damage
Rat in a Corner: +1 to attack rolls and +1 to damage when staggered