There are a handful of random gift pokemon that a player may want to keep their eyes out for.
Location
Gift
Pallet Town
Starter
Mt. Moon
Fossil
Pewter City
Powerful fossil
Route 4
Salesman 5k
Underground Path 1
Salesman 10k
Underground Path 2
Salesman 15k
Celadon City
Eevee evolution
Silph Co.
Unown
Saffron City Dojo
Martial arts
Route 22 [Altering Cave]
Legendary (1/per day)
Wild Encounters
Wild encounters are based on a Pokemon of a random type sampled from the vanilla engine’s native generator. The chance of evolved Pokemon is very low (about 1% early on). Some rare or impossible types have been given a low chance to spawn instead of the type the engine is trying.