Approximate Age: (by the Japanese anime) Fifteen to seventeen
Character Archetype: The Open-Hearted Hero, twisted into a supporting role.
Probable Element and Alignment: Fire, Chaotic Good
Most Obvious Vocal Quirks: Typically, an inner-city sort of accent and rather odd twists on common phrases, like "Smell ya later."
Like most of the main characters, Joey suffers from a lot of mischaracterization and misunderstanding, which could be seen as odd as he's a basically straightforward person. But straightfowardness and simplicity are not the same as being a flat character-- Joey is equally as complex as Yugi or Kaiba (albiet much less fractured than Kaiba). Joey's most common plague is the label of "the dumb one." He's also shown as the "girly one" in a lot of puppyshipping fics, which quite frankly is beyond me, since Joey is also one of the most, if not THE most, masculine characters in the series. (Invid comments, "He is less masculine than Rafael, and... um... and Panik. Maybe Mako.")
What people who label Joey the "dumb one" tend to miss is that he's actually the leader of the group. Yugi is the main character and the Chosen One, certainly, but he's perfectly happy to stand in back and let Joey take point. In group shots, there are always two characters leading the stroll-- Joey with Yugi slightly behind him. Joey almost always enters a room first. Joey usually speaks first. It usually means something is up when anything different happens.
This is because Joey's base character is that of the typical shonen hero: hot-headed, good-hearted, too quick to speak and act. The man always says the first thing that comes into his head (and speaking from experience, that usually ends with you saying many very strange or stupid things.) Compare both Yugi and Joey to the first other shonen heroes that spring into your mind-- Ash Ketchum. Naruto. Goku. Luffy. Who resembles them more? (Hint: It's not the short one.)
This does not mean Joey is stupid. He's merely much, much less reserved. When he does take the necessary time to think things through (and this is difficult for him mainly because he has too much energy and can't calm down enough most of the time) he's easily as strategic as Kaiba. If there's anything "wrong" with Joey per se, it's that he has ADD.
Joey is, in his own way, a crazy sort of ingenius. Because Yugi stands beside him, we tend to overlook his incredible accomplishments. Even with Yugi there, no one else would have had quite the fire and ability to come in second at Duelist Kingdom despite having had no name for himself before (and Joey did give Yugi a run for his money, so to speak.) Yugi doesn't assist him once during Battle City, but once again Joey excells despite occassionally thinking too fast. Pegasus displays genuine admiration for him during the duel with Bandit Keith (and in the dub, tellingly, Joey is never called "Joey-boy" by Pegasus. He gets "Joseph," which for Pegasus is much more respectful.) In the Oreichalchos saga, he finds himself with the most difficult of the three dragons to use (Hermos, who needs not one but two monsters on the field AND you have to figure out what the heck your new toy DOES) and yet uses it skillfully after only one "trial" duel (the one with Mai, interrupted by Valon.) Joey's growth as a duelist is also another sign of the fact that he's a more traditional shonen hero than Yugi is-- Yugi already had his skills, just not the confidence. Joey had more confidence than he had skills in the beginning, but his mastery of those skills is quick and incredible.
Beyond all that, Joey has a very strange collection of skills. Most of these are best on display during the early manga and the anime's Duelist Kingdom, in which Joey avails himself as
1. A carpenter
2. A locksmith (or a lockpick, but they're essentially the same thing)
3. A pickpocket
4. and a cook.
For whatever reason, Téa refuses to eat Joey's cooking during the Oriechalchos saga, but I suspect that either the writers or Téa forgot that, during Duelist Kingdom, he was the only one who bothered making their dinner outside the castle worth eating. (Probably the writers, as Téa is infallible. XD [/joke]) Joey's purpose within the gang, as a team, is to take point and to take care of random needs presented to the group. Because of this he's sort of a Swiss Army knife when it comes to his abillities: they're small, but numerous and practical. (He's a good fighter, but an unskilled one. This is why Kaiba always wins.)
Probably Joey's skills come from his background: he's the son of a divorced alchoholic who essentially grew up on the streets and had to fend for himself. He spent a lot of time in gangs before coming to high school and terrorized a lot of other kids. Before becoming friends with Yugi, his main prospects for the future included armed robbery and carjacking. One wonders how he ended up at Domino High instead of Rintama High-- potential reasons include a falling-out with Hirutani or the realization that this path was no way to keep his promise to his sister (in Japan, remember, students have some choice in what high schools they go to.) My personal favorite theory is that Tristan had something to do with it. Most likely, it was a combination of all three. Joey is one of the only characters whose direct relationship with his father is vital to his character. Though his father's neglect almost ruined Joey's life, Joey actively continues to support him financially throughout the series. (This is probably the real reason he continues to hold a job after getting the Duelist Kingdom money, at least so far as the dub is concerned. If papa knew Joey had money, he might drink it all up.)
Not that I'm sure Joey suffers from active physical abuse from his father. He probably has been hit with the occasional beer bottle, and most certainly has obtained a few bruises over the years, but it occurs to me that Joey might not even realize he's being abused, seeing that he himself is very rough when physically affectionate. If anything, "That's just how Dad is when he's drunk." He does love his father, which the early manga makes clear, and at least at that point, is convinced that just obtaining financial security will "fix" their relationship (he probably already feels otherwise by the end of the series, though. Kaiba is living proof that money does not equal happiness. XD) Being a top duelist makes money less of a worry later on, I imagine, but as part of his early character money is a constant struggle and source of envy for him.
One of his greater accomplishments as a man is proving himself capable of earning, winning and providing for his loved ones, something his father failed to do. The actual most likely source of the family's falling apart, and even the most likely source of his father's alchohilsm, were struggles with Serenity's medical issues. Joey solved the problem. Part of the reason for his success was learning to accept the help of others. Joey's father probably never learned that, and I can imagine him having once been a very proud man.
Another oft-overlooked aspect of Joey is that he is an awesome judge of character, once he's past that first impression. Out of the characters in the series, the ones who understand Kaiba best by the end of it are Mokuba, Yugi and Joey. When Mai needs things said to her, it rarely takes him long to ferret out the best thing to say (even though, as noted before, all the wrong things to say come out first, because he always says the first thing that pops into his head.) He also has slightly better social skills than either Yugi or Kaiba, at least in that he's unafraid to approach people he finds interesting and presents a more approachable manner himself. He's definitely better-adjusted than Kaiba is, although their respective characters share a lot in common. (This isn't surprising given their respective archetypes, which are two sides of the same coin.)
Something that most people DO understand about Joey's character is that he's almost everybody's best buddy, although I don't think most of them quite realize how far the series pushes this. Yes, he's Yugi's best friend, but he's also Tristan's best friend, and he's Bakura's pretty darn good friend, and Téa's best (platonic) friend, and his sister's best friend, and he sure does get along with Duke quite well. Mako likes him, Mokuba likes him, Pegasus respects him, Valon likes him (eventually), Mai falls in love with him. Marik likes him, and he's seen exchanging rough affection with Odion at one point in the manga. And, of course-- Kaiba likes him, too. As I noted in Kaiba's character study, Kaiba picks on Joey because Joey is funny. More importantly, by the end of Battle City, Kaiba even respects Joey, although obviously that doesn't stop him from teasing Joey. Kaiba doesn't have very many friends at all, much less ones he can tease. Joey fulfills an important role for him, and in turn, Kaiba gets Joey mad enough to stand up and excell. If Yugi, Tristan and Téa provide Joey with the support, and Serenity provides the motivation, Kaiba stokes the fire and acts as the grinding stone to sharpen Joey's determination. (wow what a mixed metaphor.) By the end of the series, Joey is one of Kaiba's closest friends, even if Kaiba isn't one of Joey's. (Although I do believe Joey considers Kaiba to be a friend. Just not the kind you borrow money from. XD)
Earlier in the study I commented that Joey is one of the most masculine characters in the series. People familiar with the cross-dressing fiasco from Series 0 may feel otherwise, but one thing to remember about that is that Joey IS Japanese. Before becoming infused with Western culture, the Japanese wore what was essentially unisex clothing, the main differences being in how people tied their kimonos. I tend to think this makes the average Japanese person more comfortable in his or her masculinity or femininity, and Joey is one of the most comfortable people in the whole series-- if he does things like that, it's because he's comfortable enough in his masculinity that it's not a big deal to him. Out of the male characters, Joey's body language is among the most masculine, when he's not effecting someone else's. (He's also got that horribly terrifying "macho" face he and Tristan both do, but I'm not going to go too far into that.) For Joey, much of the series involves his proving himself as a man. The first time I watched the scene where he and Mai part after Battle City, I felt like he had "arrived." The "final duel of Battle City" scene only solidified that. (Invid disagrees: he feels Joey "arrived" during his duel with Yami Marik. I'm cool with that, but his parting with Mai made it feel more sealed and permanent to me.)
Joey is boisterous and immature at the beginning of the series, wandering aimlessly through his life. By the end of it, he's still energetic and boyish in the best ways, but he's also become the man his father never managed to be, with drive, purpose and yes, even dignity.
Final Distillation:
Joey is the leader.
Joey has a lot of crazy skills, many of which wouldn't seem to have anything to do with each other.
He's brilliant when he thinks things through.
But he rarely thinks things through, because he has too much energy on his hands.
He's incredibly masculine, and very comfortable in that.
He always says the first thing he thinks of-- his heart is on his sleeve.
Eventually, everyone likes him.