Goblin

Goblins are simultaneously the second most populous race and also the lowest in social standing in the whole kingdom. A common saying among goblin folk is, "The Tieflings may have their magic and money, but we have stronger backs." Due to the social hierarchy of the kingdom, goblins are prevented from learnig magic or even getting a basic education, this has resulted in most goblins being illiterate. Even the few that can read, or the fewer still that can cast magic, keep this fact a secret from everyone (including other goblins). Most goblins work as either labourers or farmers and many pride themselves on their work ethic, starting work first and finishing last is seen as the most noble way to live among many.   The adventurers guild has no entry requirements or racial predjudice, as such many goblins end up joining it's ranks. Some even end up progressing through the ranks to upper echelons of adventurers, where they command some respect from people. It is exceedingly rare for them to ever take any public facing positions however, as a large bias against them remains, especially in the capital regions. This bias can manifest in numerous ways, from people not believing a goblin knight purchased his own weapons, or innkeepers simply refusing to serve goblin patrons. As such many goblins migrate to the reaches where the strict cultural and societal structures of the kingdom matter less.