I know this one artist who is so bias and tumblr over the fact that people just assume legendaries gender. This is how she do it, any legendary that is called female are males and any males are called females. This mean Groudon and Zekrom are females, while Kyorge and Reshiram are males. You might not think that is so bad, but she made this Cresselia a transgender just because all of them are female. Here is her DeviantArt page:
https://www.deviantart.com/softmonkeychains 
