
Despite his ruthless nature, Ludo is weak and cowardly, having his minions do the fighting for him and quickly retreating after his army is defeated. He has no empathy towards his own minions, punishing them for failure and is intolerant of tardiness, and will put his own safety and needs above them. Ludo is defined by his maliciousness and selfishness, bent on obtaining the magic wand to rule the entire universe out of pride without any qualms against who gets hurt in the way, even his allies. Ludo then built an army of monsters over time and began organizing plans to steal the wand of Mewni's royal family. One day, when the family went on a vacation without him, Ludo seized the opportunity to lock them outside and took over Castle Avarius, forcing his family to vacate to the Forest of Certain Death. When he was younger, Ludo became frightened of beards from a traumatic experience involving a beard during a birthday party. He was considered the runt of fifty offspring and did not grow properly like the rest of his siblings due to his abnormality, his family treated him severely in hopes of toughening him up for most of his childhood.

Ludo was once part of a family of bird-like creatures led by Lord Brudo and Lady Avarius in Mewni.
