Kyogre is pretty easy to recruit, because he might join your team on your first try, but if not, you can always try again. Make sure you have a Friendbow and/or a high team rank, like Gold or Diamond rank.
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After you beat Kyogre at the Stormy See you should get a letter in your mailbox telling that the relic's have been discovered (You're mailbox has to have space for the letter). That lets you go to Ancient Relic. There you will find all the Reggie's. You can also find Mew in that dungeon if you have the Music Box.
SEA FLOOR FRIEND AREA= YOU GET IT WHEN YOU DEFEAT & RECRUIT KYOGRE IN THE STORMY SEA KYOGRE IS LOCATED ON THE 40TH FLOOR YOU'LL NEED THE HM DIVE 2 ENTER THE STORMY SEA AND IF YOU LOSE DIVE YOU CAN GET IT AGAIN BY GOING THROUGH THE SOLAR CAVE TO THE 10TH FLOOR THERE ARE KEYS SCATTERD ON THE GROUND OF EACH FLOOR BUT B4 YOU DO THAT BRING A ESCAPE ROPE WITH YOU 2 THE SOLAR CAVE SO YOU CAN GET SOME KEYS & LEAVE...VERONICA
There is no cheat to obtain Kyogre in Pokemon Ruby. To obtain Kyogre and Pokemon Ruby, one must trade with a trainer that has obtained Kyogre in Pokemon Sapphire or Emerald.
Kyogre, you need to get the Wondermail code for accessing the Bottomless Sea dungeon. Before you even do THAT, you must rescue Scizor from Froslass in the Crevice Cave dungeon which can be accessed after you've completed the Blizzard Island dungeon. To get that, graduate from the guild, go about a few days with jobs and find Mr. Mime next to the Kecleon shop. He'll tell you about Blizzard Island and you can go to it. After you rescue Scizor, he'll give you the Secret Rank. He'll tell you you'll get "special missions" by "special means". And by "special means", he meant by Wondermail. Bottomless Sea has 50 floors, 49 if you don't count the floor with Kyogre on it. Taking this directly from Gamefaqs: (credit goes to Drayan for making that guide from which I got it from) BOTTOMLESS SEA--------------Objective: Search for the Aqua-Monica!Amount of Floors: B49F / DepthsWonder Mail:F N 0 1 H W N - 0 0 % F8 6 7 8 + X Y @ & % # 3anyway, hope this helped~
Kyogre is in Movie 9: Pokemon Ranger and the Temple of the sea