Olesia runs a nursery school for Wooper where she also takes care of her own Wooper.
Olesia's Wooper has a heart shaped marking on its chest which makes it easy for people to identify it from other Wooper.
Olesia's Wooper is a very curious Pokémon that likes to explore on its own but often gets into trouble for doing so.
While on-route to Kogane City,
Olesia's Wooper jumped up on
Brock's neck and the two of then slid down the side of a cliff to
Olesia's nursery school for Wooper. She apologized for her Wooper's behavior and explained that it's sometimes just unable to control itself.
After
Brock agreed to watch over the Wooper for
Olesia,
Olesia's Wooper ended up getting separated from the Wooper group and when
Ash Ketchum and
Misty tried to get it, it kept running away. Eventually it ended up crossing a rickety old bridge and
Ash's Pikachu had to chase after it while
Ash Ketchum and
Misty climbed up the bridge which had collapsed. Team Rocket tried to capture it after they realized their boss might find it soothing but
Olesia's Wooper proved to be a lot stronger than it looked as its
Slam attack took out
Jessie's Arbok and
James's Weezing.
Brock wanted to know how
Olesia had trained her Wooper to be so strong but she said there wasn't any special method only that the water in their pond was good for it.