LaFours is considered (even by Jay and Silent Bob) as one of the most fearsome security guards on duty, due to his size and strength; in fact he's even got "two kills" on his record. Whilst attempting to get past Lafours in the destruction of the "Truth or Date" stage, Jay and Silent Bob mess up, resulting in both of them being pursued by him.
We later see LaFours attempting to evict Brodie Bruce and T.S. Quint from the mall, only to get hit from behind by Jay with a baseball bat. LaFours and his team attempt to take both Jay and Silent Bob down, but lose track of them when they use a grappling hook.
He is also seen having sex with Tricia Jones. In the epilogue, he acquires a signed copy of Tricia's book (and perhaps even struck up a romance with her).
LaFours is a historical/movie reference to Joe LeFors from Butch Cassidy and the Sundance kid. Both characters wear white skimmers and both are portrayed as legendary law enforcers within their respective films.