>>46419974Gen 3 started the forced legendary encounter for story purposes bullshit (well, RS, in Emerald you do have to awaken Rayquaza but you don't need to face it in battle for the story to continue)
Gen 4 then continued the trend by making the creation trio a mandatory battle and Lugia/Ho-Oh a forced encounter in HGSS as well for some reason
Gen 5 was the first to make the capture mandatory though
