Answer:
Characters            Description
Sir Gawain        He is considered the ideal knight who upholds every 
                               tenet of the code of chivalry. Sir Gawain is the nephew of 
                               King Arthur and a favorite among all the Knights of the 
                               Round Table. He accepts the potentially fatal challenge 
                               of the Green Knight to save his King from humiliation. Sir 
                               Gawain survives all trials in this adventure, but his folly of 
                               accepting the green girdle to save his life in case of 
                               mortal combat brings out his human weakness. Yet he is 
                               accepted back at the Round Table, and all the knights 
                              show solidarity by deciding to wear a green girdle as a 
                              reminder of this event.
Green Knight      The Green Knight crashes in unannounced at the 
                             Christmas celebration at Camelot. He brings the much 
                             awaited element of magic into Arthur’s party. He offers a 
                             deal to the Knights that no one volunteers to take. The 
                             Green Knight displays displeasure and mocks the chivalry 
                             of Arthur and his Knights. The beheading game he  
                             suggests sets the plot of the poem in motion. He displays 
                             supernatural powers as he rides away with his severed 
                             head. The Green Knight’s appearance is so terrible that it 
                             inspires fear in even the most courageous of men in 
                             Arthur’s court.
Bertilak of Hautdesert  Bertilak is the archetypal hospitable host, and he 
                                         treats Gawain with utmost civility at his castle. He 
                                         goes hunting for three days while Gawain is at his 
                                         castle and offers to exchange the spoils of the 
                                         sport with whatever Gawain has gained on these 
                                         days. Bertilak’s hunting scenes in the forest are 
                                         juxtaposed with the scenes in which Sir Gawain is 
                                        tempted by Bertilak’s wife.
Bertilak’s wife         She plays the role of the beautiful temptress when 
                                        Gawain is at Bertilak’s castle. Gawain’s chastity and 
                                        loyalty are put to test by her attempts to tempt him. 
                                        She partially succeeds in influencing him when she 
                                         makes him accept the green girdle that has powers 
                                         to save him in the face of mortal attacks. She is an 
                                         important character in the poem because she is the 
                                         one who brings out weakness in Gawain.
Morgan Le Faye      Morgan Le Faye is the one who masterminds the 
                                        events in the poem. She is Arthur’s half-sister and 
                                        wants to disrupt the proceedings at Arthur’s court. 
                                        She is an evil sorceress who disguises herself as an 
                                        old and ugly lady who serves Lady Bertilak. Her 
                                        ugliness helps highlight the beauty of Lady Bertilak.
King Arthur                King Arthur is renowned for being the most 
                                       courteous among the Knights of the Round Table. 
                                      He is portrayed as courageous and one who honors 
                                      the code of chivalry. He is ready to take on the 
                                     Green Knight’s challenge when no other knight steps 
                                     up to accept it. He presides over feasts at Camelot 
                                     and values his knights for their bravery and high 
                                     morals. King Arthur is portrayed as the worthy liege 
                                     lord whose knights are fiercely loyal.
Queen Guenevere	Queen Guenevere does not have any major role to 
                                        play in the poem. She is seen in the first part of the 
                                        poem participating in the Christmas celebrations at 
                                        Camelot. She is the epitome of beauty and 
                                        courtesy.
Setting                        	Description
Camelot                       King Arthur’s castle and court is the setting for the      
                                      opening lines of the poem. The Christmas 
                                     celebration at Camelot is in full swing when the 
                                     Green Knight enters and offers a strange challenge to 
                                     all at Arthur’s court.
Bertilak’s Castle     The castle is the place where Gawain’s adherence to 
                                    the code of chivalry is put to test. Gawain reaches this 
                                    castle when he is out in search of the Green Chapel. 
                                    Bertilak, under the influence of Morgan Le Faye, 
                                    manipulates the game to test Gawain’s moral values.
The Green Chapel     The Green Chapel is the place where Gawain meets 
                                    the Green Knight a year after the beheading at 
                                    Arthur’s court. Gawain's fault is revealed and he is 
                                    shamed by the Green Knight at the Green Chapel.