The Terrans are great and all, but let's not beat around the space-bush here: there's a reason Kerrigan flip-flopped sides. Tanks? Bunkers? Guns? Boring . We want wriggly things that look like Willy Wonka experiments gone horribly, horribly wrong. Fortunately, the Zerg are at the heart of Heart of the Swarm, and this one has Kerrigan's horrific claw-spine prints all over it. Check out the full trailer after the break.