Big Sister Instinct: Isabela manages to get through to the dominant Snaptrapper by pointing out that all their pride is doing is starving its other "sisters" unnecessarily.
Call-Back: Hiccup suggests that Mirabel try to identify the dragon she saw by looking in the Book of Dragons, much like he did in the first film.
Failed a Spot Check: Tuffnut asks how he and his sister will both fit on one neck of the Hideous Zippleback...a two-headed dragon.
Gentle Giant: Luisa and the Goregutter bond over the fact that, despite being gentle beings by nature, they both have incredible strength.
Violence Is Not an Option: Zig-zagged. Snotlout ignores everyone's advice at first and tries to train his Monstrous Nightmare through brute force. It's only after he takes Hiccup's advice that he begins to befriend the dragon..and they bond by wrestling.
Wham Episode: The chapter ends with Mirabel citing the dragon she saw — a Stormcutter — and intends on finding and training it.
