XD I just finished watching the 3rd episode of the new season... 

Hiccup Horrendous Haddock the 3rd

Fishlegs Justin Ingerman

Tuffnut Lavern Thorston

Ruffnut Eugene Thorston

Snotlout Gary Jourgenson

and 

Astrid Hofferson

Astrid is the only one in the main gang whose middle name we don't know...Well at least I don't know :D

Anywho...

God's Blessings!

Beth