Probably wasn’t totally clear what I was trying to say 
If you fire Jean after a taunt hero is active, only krampus will get the dot.
If you fire Jean before, even after krampus fires, all other heroes will still receive burn damage.
The first is a special, so krampus protects the other heroes, if he fires after they all already have the burn and the further damage is not a special skill.
When gulli fires there is nothing krampus will prevent, he heals and he puts a buff/status effect on himself.
After 3 turns all enemies will receive damage and that’s not a special skill but from the status effect, so he won’t be influenced by krampus.