The Wheel of Time has the difficult task of juggling multiple storylines and high profile characters. Rand, Egwene, Nynaeve, Perrin and Mat are just a few of the characters who all have their own personal journeys to go on throughout the series. While many of those characters have received more than their fair share of screen time, Mat Cauthon hasn't so much been neglected as his story has just been muddled. Mat has lacked any clear direction for his story, yet it was all made up for in the Season 2 finale of The Wheel of Time.
Source：https://www.cbr.com/the-wheel-of-time-mat-cauthon-purpose/
