Lucas can be seen at Uncle Billy's Buffet during the side mission All You Can Eat. He was trying to get food from the diner when Darlene stops him, claiming that the food is hers.
While Darlene is distracted, he attempts to get food from the kitchen. This enrages Darlene, and she throws several plates at him before stabbing him to death with a large spork. Afterwards, she turns her attention to Nick and attacks him.
