Yup, its obviously not abel as he is beside him. But, through the years since Abel's death, they've been looking for people who resemble Abel to decieve the King. Karas got fed up by it, he'll probably hurt the impostor too i think, although the resemblance is uncanny.
WAIT WHAT BUT HE'S THE BLONDE TWINK WHAT???? HUH????? HE GOT TWINKAFIED BITCH WHO IS YOU???