Clopper Wizbang is a level 15 general goods vendor located in a turtle shell at the Bloodwash in the draenei zone of Bloodmyst Isle. He is affiliated with the Explorers' League, and is supposedly the first gnome to be so even though other gnomes that are members are found in Outland.
He starts the following quests:
Clopper Wizbang also ran for the WoWWiki WoWlympics! However, he lost all of his equipment. He gave clues around WoWWiki so that everybody could help find his equipment in order for him to end the stereotypes about the gnomish sporting team.
View WoWWiki:WoWlympics for more info.