Sir Cyrus is Glenn's(Frog) best friend and
first knight of the Guardian
army. He is strong and
brave and has kept Guardia in peace for a long
time and served as the personal
bodyguard of Queen Leene. He was
killed in a battle with Magus
and Ozzie which also resulted to Glenn's
transformation to Frog.
He can use the Masamune in its true potential
and still helps Crono and
the others find justice even in the after life.