"Though blood is in my veins do not take me for a lesser vampire"
As all purebloods do Kenshin is known as a plotter and a planner, all purebloods see life as a game to pass the time and Kenshin is no different even though he may have travelled great distances his plots stretch far. His personality is as hard to fathom as any of his kind but it is known that he can be quick to anger if threatened. Kenshin also feels no fear, a fact he is happy to show to all who would challenge him.
All purebloods carry in the their very beings strange powers, along side being immortal and incredibly fast, agile and strong these purebloods have powers other vampire do not:
They can form shadow puppets/spies using parts of their flesh which are capable of shape shifting.
Powers to perform spells to seal off the vampire side of vampires, thus making them a normal human. The spell also erases all of his/her memories of being a vampire. However this spell comes at the price of their life. (The vampire converted to human, eventually must return to his/her true nature, if not, he/she descends into madness.)
Ability to control lower vampires physically
Ability to turn humans into vampires and retain complete control over them by becoming their master, rendering the vampire unable to kill them
670 armed vampiric soldiers loyal to him, 100 of which were gifted to him by the Detente when he joined as a officer of their army.
Though originating from Japan, Kenshin has left his family home in Tosa and moved to visit the world, how old he is he keeps to himself but he knows a lot more than one seeing of 20 years of age should. He has long travelled and has influenced events as he sees fit, now he tires of travelling and has decided to integrate himself into society to see how different it will be than simply wondering the world and changing things. Though no doubt it will be eventful.