feebas
Feebas
Pokemon #138 in the Sinnoh Dex is Feebas, which can be found under the ownership of a fishermannear Sunnyshore City.
In the Sinnoh Pokedex it is Feebas and Milotic, however, in the National Pokedex it is Omanyte and Omastar.
numbers 138 and 139 are Feebas and Milotic.
Milotic
if you mean which Pokemon is #138 in Pokemon Emerald it is Jiggleypuff in the Hoenn Pokedex or Omanyte if you have the National Pokedex
Omanyte is #138 in the national pokedex, and it is a Rock-Water type Pokemon.
get an action replay and get a code for that Pokemon
Omanyte.
mt. cornet
i think national is Omanyte and sinnoh is Feebas
Number 138 is Omanyte. Source(s): pokemon.marriland.com