There are 10 playable races for Bless online, Union have 5. From what I have been able to read and see so far, your race does not class lock you like some other games do. Your race only determines your faction.
1. Amistad: The Amistad value freedom, independence, scientific progress, and the various arts such as music and poetry. At one time, they were freed from the influence of the Empire and organized a union of the peoples inhabiting the southern half of the continent. Now they are competing on equal terms with the Empire and are free from others meddling in their affairs.
2. Aqua Elf: After the fall of the Kingdom of the Elves, many exiles relocated to the southern part of the continent. There, they began to call themselves the Aqua Elves. Their land is located on an island, separated from the continent by a wide strait. The main objective of this nation to create a society based on the principles of free thought and progress.
3. Iblis (Devil): Just like the Fedayin, the Iblis were form another dimension. That world was ruled by the Devil’s advocates, but the rebellion changed much. They retreated to this continent, leaving everything behind. Since the retreat, they rejected ancient knowledge and have now forgotten the skills that permitted movement between worlds. They are now cut off from ever returning home.
4. Pantera: The Pantera are strong and brave soldiers who refused to recognize another’s power over them. Their previously scattered clans hunted and looted, resorting to robery. However, they have now united and joined the coalition of Union as equals to the other races. Uncontrollable and aggressive, they recognize honor and glory obtained through battle.
5. Siren: The Siren’s racial home was destroyed by the eruption of an underwater volcano. A small group survived by taking refuge in a large ship and eventually washed ashore on the continent. The Siren commune with nature and are concerned with their survival, attempting to recreate their species along with their former power. They are renown as the most gifted swimmers, divers, and sailors and have amazingly beautiful voices.