

He enjoys irritating and harshly pranking other characters, with Oggy being one of, if not his, favorite target. Joey is mischievous and loves stirring up trouble nearly everywhere he goes. However, his insanity was never displayed again outside of this episode. In "Oggy's Double", thanks to a certain blue moggy and his doppelgänger, Joey ended up losing his sanity.

In fact, he even provided a transition scene in "Beachcombers" and "Beach Havoc". He appears to be aware of the fact that he is in a cartoon, as he occasionally looks so directly at the watcher(s). Like all cockroaches, Joey possesses a big appetite and incredibly low standards of cleanliness, as he is stated to find Oggy's house "much too clean" and is shown to be prone to making messes. A good example of this trait is in "Toy's R Oggy" and "Brain Drain" when Jack outwitted him by utilizing a stratagem similar to the one the trio used on him. However, despite naturally being the smartest member of the trinity, Joey doesn't exactly know how many beans make five. He is the most knowledgeable of the trio when it comes to technology e.g., constructing a robotic and alligator-like mouse in "Mouseagator" and "Mouse Attack". Joey is incontestably the cleverest member of the trio who frequently cooks up various stratagems. His end goal is said to hold sway over Oggy's household for himself and "his people." It is also noted to canvass how victimized cockroaches will stand up and be emancipated. Despite these traits, according to some official profiles, he would produce an incredibly emotive speech concerning the ultimate fate of all cockroaches if he could talk. Joey is additionally said to metaphorically view things in black-and-white. He has even physically harmed them, particularly when they defy or irritate him. In the cartoon's more recent seasons, Joey is sometimes shown to act harsher toward Dee Dee and Marky. He is additionally revengeful and bad-tempered, sometimes seeking vengeance on Oggy out of anger merely for rubbing him the wrong way. A good example of this is in "Don't Rock the Cradle" and "Oggy the Babysitter" when he attempted to kidnap a baby for ransom, also displaying his avarice. In addition, there is practically nothing he will not do to get his way. He is quite devious possessing no qualms toward cheating ("Sports Fans") and using manipulation (e.g., the aforementioned "Fake News" which also shows that he knows how to edit videos). On a few cases, he has even sent at least one of his fellow roaches into action, so he would not have to go himself (e.g., "Mouseagator" and "Mouse Attack"). Joey is a selfish, vicious and highly sadistic individual.
