Ty Fisto was the Chancellor of the Republic Remnant during the middle and end of the New Jedi Order era. In one alternate timeline of fanfics he is Chancellor when the Republic Remnant reveals itself, aids in the war against the Vong, and the galaxy is united once again under the Republic, officially called the Republic Reborn.
He is rather stoic, and very little is known about him. One thing is known is that despite the fact that the Republic Remnant has strong ties with an underground Mandalorian force-using clan, as well as having many cultural influences from said ties, Ty strongly dislikes their presence and influence in the Republic Remnant.
The clan is known as the Tra'Kelv clan (Tra'Kelv, literally Space Hawk, named after a flying bird known in Basic as a Sky Hawk)
The Republic Remnant had been known as the Republic Shadow during the time of the Republic, so that when the Empire vested control they continued on. The Sith's ultimate strategy had been foreseen roughly 3000 years before it went into effect, and with the aid of the Tra'Kelv clan, lead at the time by it's patriarch Aleron Tra'Kelv, the Republic Shadow was created.
When Kian Tra'Kalv (aka Cody Shan), adopted son of Aleron, returned after being trapped in time and space for thousands of years, he eventually found the Republic Remnant with Ty Fisto leading it.