no i reckon the weakest Pokemon ever is Sunkern.
No, It's Magikarp! :P
Here are the considerably weakest 6 pokemon in Gen 1:Caterpie, Weedle, Magikarp, Rattata, Pidgey, Paras.
sunkern or unown
That would be Magikarp.
you cant find a pidgey in Pokemon emerald the only way to get a pidgey is to trade with Fire Red or Leaf Green
Pidgey evolves at level 18.
pidgey evolves at lv.18 same as all the other Pokemon games.
Pidgey can be found in several areas and can often be found on Route 1.
Normal/Flying.
pidgey
The weakest Pokemon in diamond is a magikarp. It is also the weakest of all the Pokemon existed. Magikarp is weak but it will evolve to a mighty gyarados.
Pidgey is #16 in the national pokedex, and it is a Normal-Flying type Pokemon.
Pidgey is a Normal/Flying-type bird that evolves into Pidgeotto then into Pidgeot. Pidgey was one of Ash Ketchum's earliest Pokemon in the original TV series.