What are vociferous?

Some articles on vociferous:

List Of Dragon Booster Characters - Side Characters - Vociferous
... Voice Actor Samuel Vincent Vociferous is the sly, smooth-taking leader of the distrustful Voice of the Dragon Crew and their representaion on the Council of ... Like Moordryd and his Dragon Eyes, Vociferous and his Voices will use deceptive tactics, but to blind others instead of rousing a high level of suspicion ... in episode 20, "Artha the Drac", and episode 24, "The Mechanist", Vociferous is shown riding a Bull-Class-like dragon with light green coloring ...
List Of Dragons In Dragon Booster - Other Dragons - Swavvy
... His human is Vociferous, the leader of the Voice of the Dragon crew ... Though Swavvy and Vociferous seem to work together as one, he could probably be better off with a more experienced rider than having Vociferous get his energy to drain quickly because of ...