This Carnivine is a grass-type Pokemon owned by James. It is the first Pokémon that he obtained in the Sinnoh region.
It made its debut in Two Degrees of Separation. When James opens his Poké Ball, Carnivine jumps out and bites on James' head. James had originally caught Carnivine in the Great Marsh as a boy when it appeared to be quite injured, as mentioned in a flashback. Also Carnivine was used by Jessie for several contests in Sinnoh.