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Okay, so, I'm just gonna break down the characters over here, since that seems appropriate. Nothing is as it seems!

ROTG:
Jack is Jack Frost
Bunny is Aster Bunnymund
Tooth is Thiana
Sandman is Sanderson Mansnoozie (Nicknamed Sandy)
North is Nick
Pitch is Pitch (but a good guy!)

HTTYD:
Hiccup is Harley (Nicknamed Hiccup)
Astrid is Astrid
Fishlegs is Felix
Snotlout is Steven
Ruffnut is Richelle
Tuffnut is Thomas
Heather is Heather
Viggo is Viggo

SHIPS (IMPORTANT):
Frostcup (Jack and Hiccup)
Heathstrid (Heather and Astrid)
Fishnut (Fishlegs and Ruffnut)
Bunny and Tooth (please comment: what is their ship's name?!)
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