I hate Flygon.

To me, it's a very lazy design in terms of typing. It's ground/dragon, and normally I'd be thrilled about a Pokemon receiving a never before used type combination. But the Flygon line is just a dragonfly who's arbitrarily humanoid. Other ground types derive their secondary typing from the species they're based off of. Excadrill is steel type because it's a drill. Claydol is a psychic type because it's a clay doll. Flygon, rather than being something tangentially related to dragon like a dog or a dragon, is just a forcedly humanoid dragonfly. The connection is forced, inorganic and the result of just making an animal anthropomorphic with no justification.