No. They are not.
Platinum is the female character (if you're refering to the Manga)
Get pokemon red
What is a red chain?
Breed a female starter
migrate it from Pokemon fire red version
Of course
action replay
No
yes
you see all the Pokemon in platinum and trade from your other games like emerald, blue, fire red etc and that is how you find all Pokemon in platinum.
frosslass to get it get female snorunt and use dawn stone
You can evolve a female Snorunt with a dawn stone.