Yes, the Elementarnold is (in the concept art anyway) the tallest character. Not as muscled as the Gladiator, but still pretty broad-shouldered. He's going to be on the slower side (so will feel a little like the Gladiator), with fairly strong "branch" and "rod" weapons that cause decent melee damage + elemental magic. So they might do a ground-pound like a hammer with a small area of effect, but also shoot a pillar of fire from the ground a couple tiles away. So his effective damage areas will be a little different compared to any other character. He probably won't have any true projectile "wand" weapons as his primary, more like unusual hit patterns + melee. So he's kind of a battle mage (as I think everyone was wanting him to be
His helmet is made of wood, but I can imagine different elementalists having helmets in other natural materials - stone, bark, grass, bone, etc. Maybe part of their tradition is to fashion a helmet or cowl from natural material as a right of passage? Kind of like how Eagle scouts are supposed to go into the woods and put an object in a pouch and keep it with them.