Goblin

History
The goblin is a mean creature that mostly lives in forests, yet there are goblins up high in the mountain. While these little bastards are more skilled then your common peasant, even the smaller warrior is able to slay one of these.

Tactic
The tactic of the Goblin is simple:

Never go alone, together we are strong.

Other
Goblins are thieves, they want to get their hands on everything a person is carrying and therefor are aggresive against everyone, no matter their race and size.