Emboar did not originate from fanon, and the information on this page may not be entirely accurate to their canon. You may read more about this subject in the context of their canon on the following wiki(s):
Emboar is the fully evolved form of Tepig, which evolves from Pignite. It is a Fire-type final stage starter Pokémon, and is along with Charizard, Typhlosion, Blaziken, Infernape, and Delphox and shares with Blaziken and Infernape the Fighting type as well. It is a Generation 5 Pokémon. Its name is a portmanteau of Ember and boar.