The Orignal Dragon Riders

Hiccup - Father to Stoick Hayden the Second, Chief of Berk

Astrid - Wife to Hiccup, Mother to Stoick

Fishlegs - Father to Elizabeth

Heather- Sister to Dagur the Deranged , friend to Stoick

Eret - Father to Eric

Ruffnut- Mother to twins Lizzie and Thor

Snoutlout- Father to Ashley Jorgensen 

Daugr the Deranged- Brother to Heather, friend to Stoick

Dragons

Toothless- Rider: Hiccup, Alpha of all dragons

Windshear- Rider: Heather

Meatlug- Rider: Fishlegs 

Darklite- Rider: Stoick Hayden the Second

Stormfly- Rider: Astrid

Star- Rider: Ashley

The New Generation of Dragon Riders

Stoick "Tobias" Hayden Haddock - Son of Hiccup and Astrid, Heir to Berk, Boyfriend to Ashley Jorgensen

Ashely- Daughter to Snoutlout Jorgensen, Girlfriend to Stoick 

Lizzie - Daughter to Ruffnut, twin sister to Thor

Thor - Son of Ruffnut, twin brother to Lizzie

Elizabeth- Daughter to Fishlegs

Eric-son to Eret