Blobbiathan is one of five animated companions. Other companions that have animations include: Blobby, Blobbette, Regarius, and Zarali.
The appearance of this companion is inspired by the Pokémon Gyarados, known to be the evolution of Magikarp, itself known for its useless attack. It mimics the story of how evolving a weak Magikarp transforms the Pokémon to a strong, powerful version of itself.
Despite the possibility of buying parchment at the Alchemy Shop, it is only possible to make Blobbiathan once.