Ludis is the protagonist in PXI. He is monotone and aloof but gets worked up quite easily, making him unpredictable and even destructive at times. He has a "no bullshit" attitude and little patience with many things, so you'd usually find him sporting an annoyed/bored tone. Though, he does have a playful side. Ludis bears a lot of troubles hiding under the surface, many of them being the main focus of the storyline.