Pokemon vs Monster Hunter

Connection:

Both are lion-like entities from RPG games owned by Japanese companies (Nintendo and Capcom respectively) who can use fire-based abilities and are known to inhabit volcanic/fiery areas

Both are members of a race that  are said to be the strongest of their kind (Legendary Pokemon and Elder Dragons respectively)

Both are associated with a group related to their generation (Entei is part of the Beast Trio alongside Raikou and Suicune, while Toestra is seen paired with his counterpart Lunastra)