PLATINUM EMERALD

Viridian Forest

Viridian Forest, Kanto and the Sevii Islands (from Pokemon FireRed).

Levels are this area's own. In your first region they stay as shown; in a region you open later they are raised to match your progress, unless you started that region fresh. See levels.

Wild Pokemon

Grass and caves
PokemonLevelsChance
Caterpie3 to 540%
Weedle3 to 540%
Kakuna4 to 610%
Metapod55%
Pikachu3 to 55%

Items

On the ground (item balls)

Hidden (use the Itemfinder or press A on the spot)