erm Mew is a she
I must admit I kinda see the legendry's being these Genders
Mew: Female
Mewtwo: Male
Lugia: Male
Ho-oh: Female
Celebi: Female
Groudon: Male
Kyogre: Male
Rayquaza: male
Palkia: Male
Dialga: Male
Giratina: Male
Reshrim: Female
Zekrom: Male
Kyirum: Male
And accepted