From Bulbapedia, the community-driven Pokémon encyclopedia.

A Fun Old Lady (Japanese: ほのぼのおばあさん Faintly Old Lady) is a type of Pokémon trainer that first debuted in the Generation III games, appearing in Pokémon Colosseum. They are hunched over old women who rely on canes. Like many of Orre's trainer classes, they don't specialize in any particular strategy or Pokémon.

Their male counterpart is a Fun Old Man.