Kyle has extremely strong beliefs, and when forced to question them, he becomes very upset and has somewhat of a short temper (especially when it comes to Cartman. This is has caused a lot of fights between the two boys). For the most part, Kyle bases his decisions on both his emotions and beliefs; therefore, he is easily coaxed into fights or manipulated by his feelings.  Despite his short temper, Kyle has a kind side. Stan is his best friend and Cartman is his Frenemy. Friend but enemy. 