Jataro has an incredible talent for all things creative, such as drawing, painting and sculpture. Jataro's thoughts are disorganized and off-topic, some innocent and some not, and he often has difficulty following conversations. He is shown to have some kind of mental or emotional instability, which becomes apparent when he falls into his episodes of incoherence. He describes these ramblings as "yawns", things that come out of his mouth involuntarily and no one can understand, not even him.