The Dragonborn believe that they are the children of the dragons, which in their mythology are the great beasts that personify natural disasters. They believe that in the ancient times before they or any other races existed, the dragons ravaged across the world unimpeded, free to destroy as they saw fit. But then came a time when other gods came into the world, bringing with them their servants and enslaved the dragons. The dragons now only unleashed their wrath when their masters bade them. But the great monsters would not submit quietly; instead they took some of their own flesh and molded it into the first dragonborn. Having created their children, the dragons gave them an important task; to free their creators by killing the new gods and their servants. And thus the Dragonborn began on their deicidal mission, a mission that continues on to the present, where the Dragonborn, to their shame and fury find themselves enslaved just like their gods. The Heildish conquest of the Dragonborn lands has put a pall over the entire species. They are unruly servants at the best of time, and in the 80 years since the initial conquest, there have been five uprisings. Now the Dragonborn wonder how best to approach the future. Some advocate playing the long game, working the Heildish into a false sense of security and then rising up to slaughter their priest and hopefully their pathetic crying god. Others believe that the only honorable recourse is to rise up now, and to not surrender, either winning their freedom and vengeance or dying free. Both factions bicker as to which path the dragons would prefer, splitting the Dragonborn people in half.
About as expected from dragonborn. Dress wise they favor simple utilitarian leather clothing, or whatever armor they can acquire. All clothing is decorated with Dragonborn symbols representing natural phenomena such as volcanic eruptions, hurricanes, tornadoes, earthquakes, floods and droughts.
Dragonborn culture revolves heavily around their religious beliefs. They are led by the Wrath-Fathers (gender neutral term), a council of shamans drawn from the priesthoods of each of the dragons. This body has been officially dissolved by the Heildish, but still exists in secret, coordinating the Dragonborn resistance. The dragon-priests below the Fathers do the day-to-day management of Dragonborn society, acting as judges, and war-leaders as well as spiritual leaders. Honor means everything to the Dragonborn. It determines how close one is to the dragons, and therefore how spiritually important one is. Honor is gained by carrying out the Dragonborn mission of deicide; killing priests of other faiths, destroying holy items, spreading fear amongst the flocks of enemy gods. This fanatical crusade against all other faiths is the greatest secret of the Dragonborn people; if the Heildish realized that the Dragonborn were more than just a race of unruly storm-worshippers, there’s no telling what they may do.
Names are generally descriptive and evocative of Dragonborn beliefs. Screams-with-the-Thunder, or Son-of-the-Smoking-Mountain are examples of the kind of names Dragonborn go for.
Dragonborn believe that arcane magic is in fact the channeled power of the dragons, and therefore treat it the same way other races treat divine magic. Most Dragonborn know at least a little magic, usually evocation of some sort. During religious rite, Dragonborn unleash the full fury of their magic and destructive breath, letting loose every fragment of their rancor out into conflagrations of power that can be seen from miles away. Divine magic on the other hand, with the exception of druidry (which is considered to also come from the Dragons), is considered to be a profane tool of the tormentors of the dragons.
As stated up above, the Dragonborn worship the dragons, which they believe are godlike monsters that embody the power of various natural disasters. This translated into a general veneration of any sort of natural disaster or expression of nature’s fury. Storms, being the most common example of such an event, are the usual time for religious rituals. The magical ability to cause such a disaster, to summon the power of the dragons into the world, is considered to be an incredibly important sign of spiritual strength, and is one of the requirements to become a Wrath-Father.