When Hiccup and the gang entered the Dragon's Nest, Mala said that the riders should receive the dragons' judgement. As their leader, Hiccup offered to go first only to see a pit full of Speed Stingers. Right after he crashed in, one of the Stingers ran in circles around him. Hiccup carefully approached one of them with a hand reached towards the dragon in an attempt to train it, which would prove to Mala that he was a friend to dragons. However, as a response, the Speed Stinger attacked him. Then, the other two dragons attacked Hiccup too and smashed the bones the boy was protecting himself with. Right before the Speed Stingers could finish him off, Toothless jumped in and roared at the dragons. They then retreated deeper in the cave.
This trio have the same coloration as a normal Speed Stinger. They are light green with small, red wings and a red stinger.