From left to the right
Queen Flaming Bliss (Bliss) she died, she is also firefly's mum Queen of the Fire Lands (most dominant lands)

Queen Snowfall Frost (Frost/Frosty)
Queen Of The Snow/Frosty Lands

Queen Waterfall Droplet (Droplet)
Queen of the Water Lands

Princess Firefly Flamilia (Flamilia)
Princess Of The Fire Lands (and heir to the throne)