well the only one i know of is one you can make. onix to steelix
to catch a Pokemon in Pokemon tower defense, drag the pokeball at the bottom of the screen onto the Pokemon you want when it is on low health.
have to hack to get lugia
the only steel type in ptd is magnamite and magneton
only if you hack or the game has a bug or a glitch
you can catch pikachu in viridian forest but it is very rare and you can not catch the main three pikachu at the end.
You must be using a hacked version, because you can't.
You can't yet because sam and dan havent put him on
you cant
turtwig
new pokemon
33443344
Get a another account on Pokemon tower defence , at the beginning choose the Pokemon you need . Then trade it with the account you wanted the Pokemon in the first place.