I’ll try to do it, I’ll start with Balthazar.

I have a small request, as one fan to another. Can I create the Necromancers?
P.S.: Question: Do Godric, Friede, and Nikolai need extended biographies? And yes, does the fact that there are three of them in the tavern bother you (if I understand correctly, these are heroes for hire, right?)?

Robert.
Robert is one of those who combines court life and military affairs, being both a baron and a knight of the Wolf Duchy. Legends about his wealth circulate throughout the empire. Some believe that these are just greatly exaggerated rumors – how could a simple baron have such a fortune? Others believe the stories about his wealth, citing his huge expenses during military campaigns as proof. Once, a merchant from Stonehelm asked Robert what the secret of his wealth was. He replied: “My barony is thriving and is located at the intersection of trade routes, which provides me with a good income. And I don't chase after trophies. I either sell all my military loot or melt it down into coins. Money is the key to success in both politics and war.”

Vincent.
Vincent, along with his brother Dominic, participated in Godric's diplomatic mission to the Silver Cities, as a result of which the Wizards supported the Grey Alliance and, together with the Imperials and Elves, repelled the demon invasion. Vincent still remembers with horror the expedition to the dragons' utopia, where the artifact needed by Godric, the Amulet of Mastery, was stored. Despite the fact that the Unicorn Duke forbade the plundering of the utopia under pain of death, fearing the wrath of the gods, Vincent disobeyed the order and secretly took out a small, dusty book. The dragons, sensing the betrayal, mercilessly attacked Godric's army. By a miracle, the Imperials managed to escape from the dark caves. Godric never managed to find the culprit; and Vincent did not confess to what he had done. At night, he began to read the stolen book, but more than ten years have passed, and he still hasn't been able to get to the end of it.