Stuart often serves as his brother's conscience, attempting to sway Adam from some of his more heartless schemes. If pressured by others, Stuart will impersonate his brother Adam, although this ruse is usually quickly undone.
In certain situations, Stuart takes on a mediating function between himself and his brother Adam, attempting to temper Adam's more extreme impulses. When faced with pressure from others, Stuart may temporarily assume Adam's identity, though this ruse is typically short-lived.