Except for Kenny who always dies, Kyle gets sick more often than any other boy. When Cartman inherited one million dollars and purchased a theme park in Cartman's Park, Kyle suffered from painful hemorrhoids. He also experienced kidney failure in 'critically ill Kyle' and urgently needed a kidney transplant. In 'Guitar Bear', he was unable to practice 'Guitar Hero' like Stan due to illness. On the contrary, in "chickenpox", he was the only person in the class who was not prone to getting sick, and even when playing a game of spitting with Kenny, he did not develop chickenpox. He eventually contracted chickenpox due to prolonged exposure to Stan and Cartman, and contracted a more severe condition than other children. Kyle, as a Jew, has a different faith from others in South Park and is often questioned and ridiculed. When this happens, Kyle will appear frustrated or angry (especially when Cartman mocks Kyle's faith, which leads to many fights between the two). In most cases, Kyle's decisions are influenced by both his beliefs and his emotions at the time. Therefore, he is easily deceived or brainwashed. Among all the main characters, Kyle seems to have the highest moral standards and often rejects behaviors he deems wrong, although under the influence of his friends, Kyle may not be able to persist