Henry (Hiccup) Horrendous Haddock the 3RD Unknown DSE: Hiccup is well Hiccup, knows how to use multiple defense things like karate, has the largest and best knowledge of DSE world wide, Has no DSE till later Chapters, well that's not completely true, Hiccup had gotten his DSE at the age of 2, but he never learned about it, and his DSE is always on though in very minor ways.
Fisher (Fishlegs) Ingerman Gronkle DSE: The second best in DSE knowledge, short of only hiccup, and yes that is world wide knowledge.
Astrid Hofferson Deadly Nadder DSE: The best in all classes so to speak, she is the school president and leader of track and field.
Skylar (Snotlout) Jorgenson Monstrous Nightmare DSE: Typical Snotlout with his large ego and not much else
Tobias (Tuffnut) Thorston Zippleback Spark Head DSE: You know who he is but do you know the trouble they get into?
Rachel (Ruffnut) Thorston Zippleback Gas Head DSE: You know who she is but do you know the trouble they get into?
Mr. Jones (Ron Jones) Whispering Death DSE: Teaches a math class
Gobber Belch Hobblegrunt DSE: Teacher at the Berk High school, He teaches the DCE course.
Dagur De Ranged Skrill DSE: Leader of the group called the Berserkers, the berserkers are 2nd largest street gang in berk. They are also the meanest.
Einar Thunderdrum DSE: Dagur's second in command of the berserker gang.
Fiske change wing DSE: Fiske is one of the many lakies that follow dagur around for 'his' protection.
Knute Shockjaw DSE: A random man from dagurs gang.
Vali Timberjack DSE: Dagurs entertainer for when he wants to watch people scream.
DSE's and Rarity
Common
Deadly Nadder
monstrous Nightmare
Hobblegrunt
Scauldron
Thunderdrum
Timber jack
Changewing
Hideous Zippleback (Only occurs in twins)
Rumblehorn
Gronkle
Whispering death
Hotburple
Uncommon
Seashocker
Shockjaw
Sand Wraith
Tide Glider
Scuttle Claw
Raincutter
Rare
Boneknapper
Flightmare
Stormcutter
Typoomerang
Snow wraith
Mythic Rare
Screaming Death
Woolly Howl
Skrill
Legendary Rare
Night Fury
Bewilderbeast