From the Super Mario Wiki
Lava Ghosts, also known as Spark Spooks, are ghosts made out of fire in Yoshi's Story with gaps in the flames that forms eyes and a mouth. They appear in Blargg's Boiler, where they leap out the lava trying to hurt Yoshi. Whenever they jump out of the lava, they make a strange moaning sound. Lava Ghosts are very similar to Podoboos in both appearance and function and even their Japanese names are similar, Podoboo (Baburu) and Lava Ghost (Flare Baburu).
Names in other languages