Ember

Embers are spectral cyan Lava Bubbles with higher statistics that appear in the first two Paper Mario games. They are based on both , a blue flame entity in Japanese folklore said to be the comprised of the souls of the dead, and, a phenomenon where blue fire appears to erupt from a ship's mast under certain conditions.

Paper Mario
In Paper Mario, Embers appear on Star Way and are visually an entirely cyan recolor of normal Lava Bubbles. They can attack Mario by jumping on him or they can attack Mario's partner to cost them a few turns unless they block the attack. Attacking them cause them to split into more Embers, and fire attacks recover an Ember's HP.

Paper Mario: The Thousand-Year Door
In Paper Mario: The Thousand-Year Door, Embers now have a gradient on their flames and bright yellow eyes. They no longer split when attacked with anything except fire, and as such are just a slightly stronger version of Lava Bubbles. They are prominently featured in Chapter 5, where Cortez has an army of them that attacks the S.S. Flavion in a scene directly alluding to St. Elmo's Fire. They are then found as enemies in Keelhaul Key and the Pirate's Grotto, appearing alongside Lava Bubbles in the latter. Once Cortez has been defeated and befriended, they appear to help Mario by attacking Lord Crump's ship. After Chapter 5, the only Embers that can still be viewed and battled remain in Pirate's Grotto.