Dr. Sqeen was the loud and confident attacker of the group. Great in battle, amazing dexterity, fantastic strength, meh intelligence. All gas and no breaks, this guy was responsible for a lot of the direction of the team, literally. He became the teacher of a Ork left clanless. After Dr. Squeen killed of the Ork's friends the Ork was committed to learning from Dr. Sqeen's amazing skill.
Fun fact: Dr. "Sqeen" is what was written on his character sheet. We never caught the missing "u" until the last episode.