After Warmaster Zahra crushed his revolution, Nadiel didn't have many friends or allies in the Cardinal Forest. Slowly but surely, he became lonely and paranoid. He had no one to speak to, so he made up an imaginary friend he called Tremur. Nadiel and Tremur held heated discussions about the future of the forest, and to Nadiel's despair, Tremur always won those debates, he was very aggressive. One day, Nadiel was in a particularly grumpy mood, fighting against himself (...or Tremur), when he smashed his staff against the floor. A dusty smoke rose up and Tremur came to life, as grumpy and aggressive as he was in Nadiel's imagination.

Tremur is a Nature Controller with Stun and Healing skills. He can activate an enemy's cooldowns and get an extra turn, or Stun and Poison all enemies. He can also MegaStun an enemy or support an ally by removing its negative effects and applying Double Healing to it. Tremur has an Evolving Trait: at rank 0, he's Immune to Stun, at rank 1, he gains Immunity to Torture and, at rank 3, he becomes a Status Caster, gaining Double Healing at the start of the battle.