His face was very ugly
Not ugly at all according to the medieval tales. The Prose Lancelot often refers to Lancelot's good looks and once describes them in a long passage.That Lancelot was ugly is an invention of T. H. White in his novel The Once and Future King.
king arther was married to Guinevere and she was cheating on him with Lancelot.
Arthur did not kill Lancelot, for Arthur died before Lancelot died.
He saved Elaine from the curse some witches put on her and he also healed Sir Urre's wounds.
Sir Lancelot
lancelot
King Ban and Elaine
Lancelot
sir Lancelot i a knight of the round table who features in many of king Arthur's victories and battles.
The Galateen was Sir Lancelot's sword. Just as King Arthur had Excalibur, Lancelot's own sword was The Galateen.
No. Lancelot betrayed him because of his lustful love for Queen Guinevere.
King Arthur's best knight was Lancelot