Loyal

From Portals of Phereon Wiki

A special trait that halves gold upkeep on characters. Useful the more characters you have, but not particularly game changing.

However if you choose Familiar trait for your MC at the start, Loyal characters will get a boost to their stat growth, making your starters and certain uniques more powerful. It also grants Loyal to hatched characters, making breeding and hatching eggs more worthwhile.