In the Halo universe, the "Hunter" enemy, the hulking shitheads covered in armor and blasting you with a fuel rod cannon and you have to shoot their orange weak spots, are actually colonies of little orange worms!
Also IIRC they work in pairs because they are mates. When you fight them you are killing a couple.
HP would be absolutely thrilled to know that. Or maybe terrified out of his mind. One of the two for sure.