Roman Lives by Plutarch. This is a compilation of biographies of interesting Roman figures. This book has been a blast to read, Plutarch focuses more on the personality, vices and virtues of the person instead of just describing historical events. It feels very personal and is a fun light read. Hard to believe it was written almost 2 thousand years, it feels very contemporary, but that could be in part thanks to the great translation. It's very interesting to discover how the Romans viewed reality too, definitely very differently than we do.
If you have never heard of Sulla look him up. What an interesting fella.