Zekoi, nicknamed Zek, is a little marmoset which was rescued by Daine upon her arrival in Carthak. She saved him from drowning in the River Zekoi and named him after the river. He quickly befriends the wildmage. Later he even finds her when Emperor Ozorne puts her into a cell magically shielded and withoug windows.
Before he was rescued by Daine, Zek was a pet. The jewel collar he wore was the reason why he nearly drowned.
He appears in Emperor Mage.