In "Tone Death", the Dragon Hunters had found Garff when he was still an egg. When the Riders showed up, they launched the egg so they could make their escape while they saved it.
While Fishlegs and Hiccup couldn't figure out what kind of egg it was, Tuffnut's Chicken sat on it to keep it warm, despite it being much larger than she was. Surprisingly, Garff hatched from the egg shortly after, only to start crying and screaming. The Riders were annoyed by his screams, not knowing how to calm him down. Tuffnut came up with a name for the baby dragon and they put him in one of the dragon stables for the night. Garff finally stopped crying after Chicken "sang" to him, only for him to respond by blasting her with amber and trying to eat her. The Riders were horrified to learn that their new dragon was a baby Death Song .
The next day, the Riders wanted to get rid of Garff (especially Snotlout ), but Heather refused, knowing exactly what it's like to be alone. Snotlout decides to take him to Melody Island, but Hiccup reminds him of what happened the last time they were there. Heather begins to sing to Garff, which puts him to sleep, along with the twins and their dragon . Hiccup then realizes that singing might not just be a way that the Death Song draws in prey, but also to communicate. This gave the riders the idea to sing to Garff to train him.
Unfortunately, Garff still blasts each rider, except Heather, with amber regardless of whether or not he likes their songs. Seeing that their method isn't working, Hiccup decides to take Garff to Melody Island and find the adult Death Song. They keep the baby dragon quiet with a combination of Heather's singing and Dragon Nip .
Once they arrive, they find that the Death Song managed to escape the cave that Hiccup and Earsplitter trapped him in, and are soon attacked by him. Garff flies over to the older dragon and cries. The Death Song approaches him and begins to sing. Garff responds with his own song, but the dragon whacks him into a cliff wall with his tail. Hiccup realizes Garff is singing the songs the Riders taught him and the Death Song doesn't like them. They all trying singing a other song to calm the older dragon, but to no avail. Just as he is about to attack, Garff flies back to protect them and begins to sing. This time, the Death Song accepts Garff's song and flies off with his newly adopted child.
Now having reached adult or near-adult size, Garff is attacked by the Dragon Hunters under Krogan and left for dead while his "parent" is captured for use in capturing Singetails in "Living on the Edge". Astrid and Stormfly stay with him, and are able to nurse him back to health.
Garff ends up staying on Dragon's Edge after this and bonds closely with Stormfly and Astrid.
Having taken up residence on Dragon's Edge following the Dragon Hunters' attack, Garff becomes a problem when he begins attacking other dragons in "No Dragon Left Behind", with the exception of Stormfly, who is his best friend and has become immune to his song. This prompts the riders to attempt to relocate him to a new island, only to find it home to a pack of Slitherwings that capture Garff and seemingly poison Stormfly. However, in reality Stormfly is mourning Garff's apparent loss, as Garff's amber was unable to cling to the poison-coated hides of the Slitherwings. Garff is able to protect himself from their poison by encasing himself in his amber, and is eventually rescued by the riders, who soon relocate him to another island.
Since he's a baby dragon, Garff has a habit of crying, which is especially irritating to others. The reason why his crying is so loud is because of his species. The only time he stops is if someone sings to him.
As with most children, Viking or Dragon, he is shown to have a big appetite. He is often seen licking his lips at the sight of Chicken, even though she technically hatched him.
Abilities and Skills
Despite being only a few days old, Garff has displayed early signs of skills most Death Songs learn as adults.
Song Mimicry: Having listened to the Dragon Riders' many songs, he was able to repeat them in an attempt to communicate with the adult Death Song.
Intelligence: He is able to understand and respond appropriately to the Riders' songs, such as when Snotlout insulted him in his song prompting him to blast his face with amber.
Firepower: He is able to shoot out blobs of amber big enough to immobilize a chicken.
Hunting Skills: Much like the adults of his species, Garff uses his amber blasts to trap his prey before devouring it. However, he has yet to master the ability to lure his prey towards him via his song.
Endurance and Stamina: Garff was able to get back on his feet shortly after the adult Death Song whacked him into a cliff wall with his tail. He also learned how to fly on his own only a few days after he hatched.
Stormfly becomes Garff's best friend in Season 5 and is the only dragon that isn't affected by his singing.
Heather was the only rider he didn't fire amber at as a baby.
Unlike most dragon eggs, Garff's didn't explode as violently when he hatched. This could be because his species doesn't breathe fire.
Garff is the fourth dragon to be raised by another dragon of the same species that isn't his biological parent, with the first three being Bing, Bam, and Boom.