Kondou Isami, 29. Chief of the Shinsengumi. He ran a small dojo before becoming one of the chiefs. His faction is made up of men that stayed and trained at his dojo and are pretty much loyal to him. He's close to Hijikata and Okita, Okita being more like a little brother to him since he knew him since he was 9 and was left at the Dojo. He treats the men like his family and is very fatherly to them. He is also very kind, trusting, enthusiastic, but is also stern with the ability to lead. He does, however, can become blinded to the reality of situations with his optimisum and equal trust in other people. 

For his voice, it can be loud and joyous, but softer when adressing someone when he needs to reasure them or facing a troublesome serious situation. A good example is Maes Hughes from FMA, just more serious. (Okay, Yes, Kondou-san has a wife and daughter, they're just back home. So he is a dad.)