my answer is my opinion ok i think the most powerful Pokemon in ruby is the Pokemon you raise and favor the most! so get your favorite Pokemon that you've trained alot and love and go battle and you'll see what i mean..... for me it's my lvl 86 salamence. hope this helps =D
Minun can be caught in Pokemon Omega Ruby by seeking out these powerful Pokemon and then unlocking their incredible potential.
Groudon, Kyogre, Rayquaza, Deoxys and Jirachi!
latios cuz he's rare and cool!
mudkip is the most powerful
Yes it evolves to slaking which is a super powerful pokemon.
You can only get Rayquaza in Pokemon Diamond by trading it from Ruby, Sapphire, and Emerald. The Rayquaza is a very powerful flying dragon type Pokemon.
Pokemon ruby's version IS Pokemon ruby.
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
If You Wanna make up the last gym of ruby or sapphire then just take your default Pokemon and level it upto 65 to 70 lv then take kyogre and rayquaaza on the second and then the most powerful Pokemon you have.
I guess you should train alot dude... some um yeah
steven doesnt get any stronger when u double battle with him
ruby