The Wheel of Timealready seems to have set up the two main villains for season 4, and Mat might be the greatest weapon for the Light. Out of all the Wheel of Time characters' stories to predict for season 4, Mat is the most challenging to pin down. He's consistently deviated from his book counterpart, especially in season 3, with him traveling to Tanchico instead of the Aiel Waste, putting him on a curious path going forward.