Horror

Pink shifting masses of limbs and Warp-fire. Tzeentch's foot soldiers, they just don't stop laughing and throwing doombolts everywhere. Dawn of War fucked them up, making them only usable against vehicles but on the tabletop, you can infinitely troll the living shit out of your opponent with them. Just keep them out of melee range.

Blue Horror

When Horrors are beaten up or shot, they sometimes split into this. 2 half-as-powerful versions of their parent daemon, they never laugh but oh boy do they throw lots more doombolts. "For the sake of players' sanity this is not represented in the rules"

Notable Blue Horrors

• The Blue Scribes, P'tarix and Xirat'p (real funny Games Workshop) were tasked by Tzeentch to collect every spell in the galaxy. They squabble a lot, and have this weird quirk. P'tarix can write spells on paper but can't read them, while Xirat'p can cast spells by reading but doesn't know shit about magic. This is represented by Watch this! where they sometimes cast the same spell every turn. This was intentionally done by Tzeentch so that the two could never successfully rebel against him if they get ambitious enough.