no
You... can't make our own gym. In any official Pokemon game so far.
you have to mix records
The Move Deleter in Pokemon Ruby, Sapphire, and Emerald is found in Lilycove City.
Easy go to: http://www1.freewebs.com/goldengroudon/pkmnmaker.htm.Copy it into the address bar at the top.
You cannot make poffins in Ruby, Sapphire, or Emerald but you can make pokeblocks at contest centers
Own a Poochiana or a Zigzigoon
contest hall
ditto and wiglituff
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
A cute Pokemon would be pikachu.It's in the Safari zone.{there are lots more cute Pokemon that you have to find them on your own.}
u cant make forts in sapphire but u can in emerald ruby version and dimaond and pearl.
After you defeat the elite four on Pokemon sapphire you complete the pokedex and make all your Pokemon level 100.