Horde used the leech-like worms that covered his body to control people's minds. The Leeches, later referred to as 'Wicked Worms' (as they were all duplicates of The Wicked Worm), attached themselves at the base of each victim's skull. Each worm, it was later revealed, also had the intellect, personality and power of speech that the original Wicked Worm had.
