Knights
The knight was generally a man of noble birth who had served in the lower ranks as page and squire before being ceremoniously inducted into knighthood by his superior. At his induction the knight usually swore to be brave, loyal, and courteous and to protect the defenseless. Chivalry, code of behavior that medieval knights followed.

Knights of the Round table:

SIR BEDIVERE - only knight that appears early in the legend of King Arthur. He is often pictured a a person with only one hand. He is remembered in the legend for staying with king Arthur when he was mortally wounded in the battle of Camlann.  It is Bedivere that Arthur entrusts with Excalibur appearance.

SIR GAWAIN is King Arthur's nephew. He has never lost a battle. He is loyal to Arthur and against Lancelot. His values get tested by the Green Knight.

SIR LANCELOT is the most known Arthur's knight. He fell in love with queen Guinevere and disrespected the throne.

SIR KAY is very loyal to Arthur. He raised Arthur and he is his foster brother.