Wooper's biggest asset is its Water/Ground typing (or Poison/Ground for Paldean Wooper), which is one of the best defensive type combinations in the game.
Massive resistances: This type combination gives Wooper a coveted immunity to Electric-type attacks, a common and powerful offensive type. Wooper is also resistant to Poison, Rock, Steel, and Fire-type moves and also Effective counters: Wooper's typing allows it to "wall" or effectively shut down several common threats. With its Hidden Ability, Unaware, it ignores the opponent's stat changes, making it a reliable check against Pokémon that try to set up with moves like Dragon Dance or Swords Dance. one more thing built in healing: Wooper's other power, water absorb, is able to heal wooper when faced with water type moves. also quagsire and clodsire are chill this is my proof