Pon Edestus

Pon Edestus was a force-sensitive Nautolan male and mercenary who travelled to Spintir to hone his force abilities.

Biography
Pon Edestus was born into slavery. Eventually, he managed to free hundreds of sentients in a Slave Revolt, although at the cost of his arm. His own freedom was eventually bought by Hethan Romund, after noticing he was force sensitive. Since then, he acted as a mercenary who fought in the name of the oppressed.

Source

 * Star Wars: Force and Destiny