Ludo

Ludo is a major antagonist of Star vs. the Forces of Evil. In Season 1, he uses an army of monsters in order to steal Star Butterfly's wand and take over the universe. Throughout Season 2, however, he has his own wand and new monster followers. Toward the end of Season 2, his body is possessed by his traitorous former ally Toffee. At the beginning of Season 3, Ludo discovers that his wand has become his right hand. Using this, he briefly takes over the Butterfly Kingdom, but ultimately decides to go on a soul-searching journey after Toffee's final defeat which he brought on by finishing him off himself. He is voiced by Alan Tudyk (Duke Weaselton and King Candy).

Personality
Ludo is evil, and bent on stealing Star's wand so that he can take over the universe with it. He is very power-hungry, and he leads an entire army of other evil monsters that are out to help him steal the wand. Self-centered, he puts his needs above those of his minions' and doesn't show compassion if they or anyone around him gets hurt. Despite his evil personality, he is shown to be quite cowardly, childish, and weak, having his minions fight for him (never engaging in combat personally), and often giving up on a fight and retreating after Star and Marco defeat his minions.

When he is forced to fend for himself, Ludo develops great determination, besting a giant spider in battle through sheer cunning and bringing both it and a giant eagle that had assaulted him earlier into his service. He even sheds his former cowardice, allowing a bar full of rats to attack him in order to make him angry enough to charge his wand. He also shows some degree of care for his new minions, telling the spider and eagle to run just before he unleashes the power of his charged wand on the rats.

In "The Hard Way", Ludo reveals to Glossaryck that, as the runt of a litter of fifty siblings, he has had to fend for himself his entire life and thus yearns for some genuine guidance and positive reinforcement.

In "Starcrushed", Ludo reveals that the reason he became evil and kicked his family out of his castle was because of the way they treated him, despite his parents doing it to try and toughen him up. It was at this point that he started to actually lose his sanity as Toffee's control over him strengthened.

In "Toffee", Ludo becomes deeply distraught after Toffee coldly tells him he didn't play any part in his scheme, and he decides to go on a soul-searching journey through the void after Toffee is defeated.

In "Ludo, Where Art Thou?", Ludo grows deranged from his extended time in solitude, but after helping and encouraging Dennis to face their parents, he regains enough sanity to face his own problems.

Role in the series
Being somewhat reformed, Ludo is an uncertain ally to Star and her own unintentional alliance with the Shell Lodge Squad as Mewni is it's own pocket dimension masterful with interdimensional travel. He continues to live in the void.