Since becoming a vampire, Spike's core personality trait of loyalty has occasionally been at odds with his resentment of being controlled. While he prefers to seem himself as a rebel against any kind of authority, he recognizes that his devotion has allowed others to manipulate him and, at times, for him to put self-imposed limits on himself for the sake of others. In an extreme example, Angel was able to manipulate Spike's allegiance based on his attachment to Drusilla; in a less extreme example, he often modifies his crass tendencies around Dawn to keep from disappointing Buffy, though he ceases when she is not around.