Pokémon heart gold & soul silver - your rival - serebii.net, Dragon's den. after this, on tuesdays & thursdays, you will find your rival is back in training in the dragon's den. here, he is not battleable but will talk to you.
Pokémon red & blue - rival encounters - serebii.net, Encounter #2 - route 22: location: route 22. details: left of viridian city your rival will be training his starter and newly caught pidgey; this remains applicable.
Pokemon x & y all mega stone locations - you., 0:22 medichamite & gengarite 1:00 banet.e 2:22 alakazite 4:44 gyaradosite 5:14 scizorite 5:38 tyranitarite/aggronite 6:27 manec.e/houndoomite 7:09.
Tips for playing pokémon x & y - kotaku, I wish you could pick your own captions on these, though. then i'd accompany the keychain pokemon with the words jingle jingle, motherf***ker..