Slugma, the Lava Pokémon. Slugma have intensely hot magma which circulates throughout their bodies carrying nutrients and oxygen to their organs.
– May’s Pokedex
Slugma looks like a blob of magma. It has the two weird drops of blob of magma hanging down on its chin.
In the anime, Flannery has 2 Slugmas, named Mag and Meg.
Stat-wise, it’s slow (probably because it’s based on a slug), but has decent Sp Attack; its other stats suck though.