I know that:
you must beat Zapdos for the first head
beat Moltres for the second
beat Articuno for the third
beat Groudon for the fourth'
beat Rayquaza to get the fifth
beat Kyogre to get the sixth
beat and recruit Mew to get the seventh
beat Ho-Oh for the eighth (or the seventh, if you haven't gotten Mew)
beat Lugia for the ninth
beat Deoxys for the tenth
and I'm not sure about Mewtwo, Celebi and Jirachi (the latter two most easily gotten with Mew, though)
hahahaha! legendary cats, they're actually dogs XD w00t
It actually doesn't matter if it is a boss. Mew isn't a boss. Jirachi will probably be before Celebi because of all the commotion about it. (Talk to Ekans, Medicham, talk to Ekans, rescue Medicham, beat Jirachi, obtain wish/Jirachi
hahahaha! legendary cats, they're actually dogs XD w00t
hahahaha! legendary cats, they're actually dogs XD w00t
THERE NOT DOGS!!!!!!!! NO MATTER WHAT OFFICAL COURES SAY THERE CATS!!!!!!!!!!!!!!!!!!