I noticed on my mage that electrocute kinda buggs the unicorns. I have paralasys in one of the passive slots which can stun enemies hit by electrocute. The unicorns that get stunned dont move towards me after the stun. Instead they walk on the spot. Happens very often with the teddybears too. Might help on higher difficulties for low geared players.
Also happens on slow effects from the wand called "starfire".