Lucas is the brother of Ella Chesire and former boyfriend of Callie Rose.
When Lucas and Callie were little kids, he was annoying and rude, but over time he became kind and a good friend of Callie. When they became teenagers, he defended Callie by punching Amus in the nose after he insulted her, the pair started going out and became lovers. When Callie turned 16, she started going out with Tobey Durbridge instead and broke up with Lucas, after dating him for a couple of years. Lucas then started being mean to Callie again.