Grey knight

The Grey Knight are a bunch of fucking badass SPESS MEHREENS that also, like their brethren, do it for the EMPRAH. Playing a Grey Knights army is like playing 40k on "Hardcore Mode". In an average 1,000 point match, you'll have 20 models and a land raider. But it's okay, because they kick ass. Plus all of their models subscribe to the Rule of Cool.