Liam is "sharp", and a hipster.

He dislikes the mainstream, the sun, and vampire slayers, which he thinks are cliché and "annoyingly deadly."

He is greatly concerned with ethics and doing what is considered the ethically right thing, such as only drinking ethically-sourced blood and organizing petitions or writing letters to unethical corporations.

His concern with ethics and rebel stance against the mainstream is a way of deflecting the responsibility of introspection and self-critique. Rather than thinking critically on how power could be used in helpful and productive ways, he avoids thinking about how his past misdeeds were a result of his own actions as an individual by criticizing the concept of having power itself.