the lv 1 Creation trio members you get from the Arceus Event on HG & SS, the Regigigas on Platinum, Manaphy hatched from the Manaphy egg, and a Phione thats bred from Manaphy and Ditto and some wi-fi legend events for HG & SS are the only legitimate Legends under lv 30 but a legit Zekrom on black is caught lv 52(stolen from N) and lv 50 on White(caught Wild) but supposedly if you do an instant breed code wi-fi will consider it legit im not positive as i cant get my DSi to be allowed on our secure wireless network