What's his deal

No signature move, no signature ability, no evolutions, no forms or new moves in any game that came after, no clear inspiration for name or design, appears in one location in the game it's from, has a shared stat total with Raichu, Comfey, and two apples, and (as far as I know) no relevance in his gen's anime or any season that came after. Am I missing something? What were they cooking with Druddigon?