IG-88

Just faced one in arena.. he had phasma lead and straight off the enemy Sid's AoE he had a bonus attack and hit a crit over 9k.. lost one of my characters literally in the first move, he had no buffs or anything and phasma was lead so there wasn't a leader ability to increase crit damage like Sid for instance, is it normal for him to be hitting over 9k on his basic?? If so I may need to get farming xD