He is an legendary chief, he has an heart of gold, he loves his home, saves dragons to protect them, his name is Hiccup Horrendous Haddock The Third.

"I'm tired of keeping secrets from everyone I know and love. It just drives everyone away from me, and I'm done pushing people away." ~ Him looking back on himself

"I am Prince David Samson Lionheart, son of King Cecile and Queen Lilly of planet Eluria, heir to the throne. If you feel like dying, come and get me; I'll gladly give you death." ~ Him talking to anyone who threatens his loved ones

Name: David "Hiccup"
Codename: Dragon Master
Surname: Samson Lionheart "Horrendous Haddock The Thrid"
Age: 21
Living: Berk, Dragon's Edge, Dragon Sanctuary, New Berk
Birthplace: Eluria
Parents:
- King Cecile (biological father)
- Queen Lily (biological mother)
- Valka Haddock (adopted mother)
- Stoick Haddock (adopted father)
Siblings:
- Jason Alexander Lionheart, 25 (biological brother)
- Cole William Lionheart, 36 (biological brother)
- Lilly Elizabeth Lionheart, 16 (half sister on mother's side)
- Summer Gracelyn Haddock, 18 (adopted sister)
- Star Alex Haddock, 20 (adopted sister)
Dragon: Alpha Toothless (Night Fury)
Pet: Comet (dark brown stallion from his home planet; his personal royal stallion and oldest friend)
Weapons: 
- Gonckle Iron Shield
- Inferno (fire sword)
- Elurian weapons
- Dormant elemental powers
- A Titan form from "Attack on Titan"