What is the personality type of Foil? Which MBTI personality type best fits? Personality type for Foil from Fictional Character Archetypes Stock Characters and what is the personality traits.
Foil personality type is ISTP. And their enneagram is XwX.
To learn more about ISTP and its traits click here.
In any narrative, a foil is a character who contrasts with another character; typically, a character who contrasts with the protagonist, in order to better highlight or differentiate certain qualities of the protagonist. In some cases, a subplot can be used as a foil to the main plot. This is especially true in the case of metafiction and the "story within a story" motif.
A foil usually either differs dramatically or is an extreme comparison that is made to contrast a difference between two things. Thomas F. Gieryn places these uses of literary foils into three categories, which Tamara A. P. Metze explains as: those that emphasize the heightened contrast (this is different because ...), those that operate by exclusion (this is not X because...), and those that assign blame ("due to the slow decision-making procedures of government...").