After redesigning Silvergust again I decided to redraw an old drawing I did of her and her rider Brenn.
I'll just copy-paste my old description here:
After HTTYD 2, Hiccup, Toothless and the rest of the dragon riders of Berk have made it their mission to travel to various islands to help make the world a place where humans and dragons can coexist. It's not an easy job and they continue to be met with conflict, but nothing can stop them from reaching their goals.
One night while Hiccup and the gang were freeing dragons from dragon trappers, Toothless discovers the light fury trapped in a cage. Toothless has never seen a light fury before so he's fascinated by this dragon that looks like him, albeit with a silvery color. He frees her and tries to gesture for her to join him, but when she spots Hiccup in the distance she reacts with fear. She escapes and flies away, leaving Toothless sad, but he returns to his duty of rescuing the other dragons with Hiccup.
The next day the rescued dragons are brought to Berk and examined for any injuries. The rescued dragons have a place to stay, and the vikings leave them to choose if they want to stay on the island or fly away to reside elsewhere. Toothless spends the day with Hiccup looking after the rescues and fulfilling his role as alpha, but the memory of the light fury is still in the back of his mind.
Unbeknownst to him, the light fury is watching him, albeit with her invisibility hiding her. Despite her fear at seeing Hiccup last night, she was so fascinated by meeting a night fury that she just had to return to see him. She spent the day observing, and was fascinated by Toothless's bond with Hiccup, as well as the other riders and their dragons. Ever since she was a hatchling, Silvergust has only known humans as vicious, violent monsters.
That night, the light fury decided to show herself to Toothless. He was thrilled to see this new dragon back, and during their reunion, Hiccup and Astrid walked over. The light fury hesitated when she saw these two humans, but remembered how she witnessed the humans and dragons appearing to coexist. She still showed reluctance, but Toothless encouraged her that it's perfectly safe. Nonetheless, the light fury just didn't feel safe around them yet.
Hiccup could tell she was scared, and decided to give her time. Despite still not trusting the humans completely, she decides to stay on the island, albeit at a distance. Later that night, Hiccup names her Silvergust.
Over time, Hiccup works to earn her trust (Valka helps too, of course, since she's been a dragon expert longer than Hiccup). Slowly, she learns to trust them, and soon becomes comfortable enough to live with the humans. Once she becomes comfortable around him, Hiccup learns that her personality is a lot like Toothless; she has a funny playful side and a snarky sense of humor. He's also thrilled to realize that she and Toothless seem to be forming a romantic bond together.
Now onto Brenn. She's the daughter of the man behind the dragon traps that Silvergust was freed from. Her father's village was attacked by dragons when she was a baby which led to her mother's death and three year old Brenn being blinded in one eye, so he raised her to believe dragons needed to be exterminated, a belief she still held into adulthood.
Brenn and her father declared war on Berk, but by now the Berkians knew how to deal with hostile trappers so were prepared to fight. One night Brenn sneaks onto Berk and prepares to launch a surprise attack on the chief, but Hiccup is protected by both Toothless and Silvergust. When Silvergust notices Brenn's weapon, however, she gets traumatic flashbacks and without thinking, ends up attacking Brenn. When Silvergust snaps back, she realizes she's hurt a human and is horrified.
Despite Brenn being the enemy, Hiccup decides she needs her wounds healed and keeps her in the village, hoping to show her through kindness and hospitality that they don't have to fight. Every time Hiccup tries reasoning with her that dragons aren't their enemy, Brenn angrily retorts back that the only reason she's still there is because a dragon attacked her. Silvergust, feeling genuine remorse, tries to visit Brenn while she's healing but Brenn shouts at her to go away. It hurts Silvergust to be yelled at, but that doesn't stop her from trying to bond.
One day Brenn grows sick of their hospitality and tries to leave, despite still needing to recover from her wounds. While trying to get down to the boat she came in on, she gets lightheaded from trying to leave before she's fully recovered and ends up falling over the edge of a cliff and headed right towards some very sharp rocks in the sea, but Silvergust saves her. When Brenn realizes Silvergust saved her, she decides to reach her hand out to try and touch her, and Silvergust lets her.
After that incident, Brenn allows herself to recover on Berk and slowly learns that her father's views on dragons are wrong. Not only that, but she ends up bonding with Silvergust. Once Brenn's completely healed, she even tries riding Silvergust, which completely seals their bond. After that moment, Silvergust became Brenn's dragon.
Eventually, Hiccup and the other dragon riders have their fight with Brenn's father, who is shocked to see his daughter is now a dragon rider. While the vikings fight her father's crew, Brenn tries to convince her father that he was wrong. He refuses to believe it, and their long confrontation ends with him pulling a dagger on them, so blinded by his hatred of dragons that he'd rather his daughter be dead than a dragon rider. Hiccup and Toothless see this and fly over in the nick of time to try to grab the dagger from his hand, but right before they can grab it he stabs himself instead. Brenn screams in agony as her father dies, and although Berk has won another battle, everyone comforts Brenn instead of having a celebration.
So after that, Brenn becomes a dragon rider of Berk with Silvergust as her dragon, Hiccup and Astrid eventually get married and have Zephyr and Nuffink, and Toothless and Silvergust lay three eggs which hatch into Dart, Pouncer and Ruffrunner.
Also here unlike the light fury, Silvergust actually has a personality and isn't a bland, shallow seductress who's only goal is to "lure" Toothless away from his true home into a dark and depressing hole.
I also decided that Brenn becomes Eret's love interest (they both bond over being former dragon trappers) and they have a son together named Bjorn who becomes the rider of Silvergust and Toothless's son Ruffrunner.
