Just a ref.
Shrouding Fog: A stealth dragon who hides itself in fog, weapon undecided.
Night Star: A night sky like pattern on the scales, weapon undecided.
Violet Nightmare: A lightening based, possibly purple scaled.
The Lunatic: The mother dragon of the group, more powerful under the moon, and able to drive those closest to her mad with a poisonous gas. Also can control the other dragons.
Newt howls mornfully to Locke of pack Asgard
Newt howls in sorrow
Newt falls down