Liam is one of the "big, tough, jocks" or so he tells people. Liam has a tendency to bully others lower than him, but mainly to hide his insecurity of how weak he actually is. He honestly gets flustered and shy, very easy, and it's so embarrassing how submissive he is. So he has to pretend to be dominant, however seemingly the smallest bit of back talk, and he stutters and fumbles instantly.