Sir Didymus, faithful and brave, is THE comic relief in the movie. He acts like a real knight, or atleast tries to. He has a small problem with staying quiet and with strategic planning, though, often giving into unneeded bravado. His steed, Ambrosius, is on the other end of the scale, a complete coward. The two are loyal to eachother, though, and eventually loyal to Sarah, Hoggle, and Ludo.