Burnsters are red slugs, possibly a relative of zapsters, that can be found in fire biomes all over the world. Molten hot slime coats their bodies which can scorch through anything that isn't fireproof. Of course in fire biomes, many things are fireproof so they don't exactly have an advantage. Since there aren't many plants to feed on in fire biomes, burnsters feed on smaller creatures instead. They can spit out streams of hot slime to hurt the prey it wants, then it will try to catch the prey.