In "Invisible Prey" by John Sandford, Lucas is portrayed as a character driven by a profound anger that simmers beneath the surface. This anger is not just a fleeting emotion; it transforms into a deep-seated hatred, particularly towards those who threaten his loved ones, namely Weather, Sam, and Letty.

His thoughts of vengeance are chilling and calculated. Lucas envisions himself coldly planning the demise of anyone who poses a threat, suggesting that this anger, while intense, is also methodically directed. His resolve to eliminate those who harm his close circle indicates not just a reaction to pain but a relentless pursuit of justice that fuels his murderous intent.