Big Ego, Hidden Depths: Many episodes (particularly ones where the Dragons have strained relations) suggest that Omi fears being alone and believes that if he is perfect, he will be surrounded by adulating friends and admirers.
Honor Before Reason: Omi is completely devoted to the way of the Xiaolin monks. This means that he often does incredibly stupid things, including playing into the villains' hands, because he gave his word as a Xiaolin warrior. Interestingly, this seldom overlaps with Chronic Hero Syndrome, as Omi's complete devotion to his duties as a monk can make him hesitant to help people not directly connected to said duties (such as with the old woman in "The Bird of Paradise").
Insufferable Genius: For all his bragging, Omi is indeed a talented martial artist with more training than the other monks.
Meaningful Name: Though more than likely an unintentional Bilingual Bonus, Omi is the Yoruba word for "water". Considering it's a Chinese character made by a Chinese creator, it's strange he would have a Nigerian word for a name.
Big Ego, Hidden Depths: Rai becomes angry whenever he feels helpless or inadequate, as shown during the events leading to his betrayal. It's straight-up stated in "Dream Stalker" that his lazy, jerk-ish attitude results from his fear of not being good enough and letting others down.
Chronic Hero Syndrome: Despite his jerkish tendencies, Raimundo is always the first to put aside the task at hand to help someone in need, regardless of personal risk. However, this seldom overlaps with Honor Before Reason, which is generally reserved for Omi.
Cool Sword/Fighting With Chucks: Both the Sword of the Storm and the Blade of the Nebula are swords that can manipulate wind and weather (but can't actually slice anything). The Blade of the Nebula can turn into nunchaku for greater control and versatility in wind manipulation.
Jerk with a Heart of Gold: The heart of gold part is made very obvious in episode 9. Omi gets separated from the rest of the Xiaolin Dragons, and when they find him again, Raimundo pulls him up and hugs him profusely while expressing his heartfelt worry and relief, complete with a parodying playing of the violin.
Raimundo: "You're alive! Don't you ever scare us like that again, we were so worried and I...what? I was worried."
The legendary Xiaolin Dragon who defeated Wuya and hid the Shen Gong Wu 1500 years ago. According to the ancient Scroll of the Shen Gong Wu, Dashi was the first and most powerful of all Xiaolin Dragons.
Batman Gambit: He acted like a Drill Sergeant Nasty to make Hannibal Roy Bean sway Raimundo to his side. After Raimundo pummels Omi in a Xiaolin Showdown, Guan makes Hannibal bet the Treasure of the Blind Swordsman against all their Shen Gong Wu, and Raimundo takes a dive. Thus, the monks got back the Treasure of the Blind Swordsman which had given Hannibal a huge advantage.
Big Damn Heroes: When he appears to defeat Chase Young in his debut episode.
Big Good: Shared with Master Fung. Although he doesn't appear as much as Fung, he is the most powerful good guy, able to fight equally with Big Bad Chase Young and all his efforts are in direct opposition to the seasonal Big Bad.
Badass Normal: His surprising skill at winter sports like skating and snowboarding and his fast reflexes, not to mention his flashes of brilliance. Also, there's the Bad Future where he takes over the world and defeats pretty much everyone. Yes, even Chase Young.
Badass On Paper: Despite being the laughing stock of the Heylin side he still has a fairly impressive bad guy Rapsheet.
Expository Hairstyle Change: When the effects of the Ying or Yang Yo-Yo switch him to good, his hair is combed and neat, but what is more interesting is its change to a more natural shade of red (i.e., orange) rather than its usual bright, crayon-like red.
We Want Our Jerk Back: The reaction of the Xiaolin Monks whenever he turns good via the Ying Yang World, because Good!Jack Tastes Like Diabetes so much that they like him even less than they do when he's normal.
The true Big Bad of the first season, Wuya is a 1,500 year old Heylin witch who is more than a little irritated about being trapped as a ghost inside a puzzle box for much of that time. After Jack Spicer releases her, she guides him towards the Shen Gong Wu in an effort to regain her full power and mortal form (and subsequently take over the world). Ruthless and self-serving but also short-sighted, Wuya will betrayanyone to achieve her goals, except that one kid who betrayed her, oh what was his name again... The saddest part is that she actually DIDN'T SEE IT COMING!!!
Even Evil Has Standards: Chase is a ruthless half-dragon Heylin Warrior who won't hesitate to turn Omi to the Dark Side or seriously injure Jack Spicer (at the very least, considering he once tossed said "Boy Genius" off a dangerously high cliff and threw a dangerously large boulder at him in another episode), but you can bet your life and college savings that when he makes a promise, he'll keep it.
A girl who met Jack Spicer at one of his parents' parties. After Jack failed in acquiring the Golden Tiger Claws, she joined him and Wuya on the Heylin side. She shows her affinity for cats by dressing up in a costume that consists of a form-fitting catsuit with heeled boots, a head cover, and cat ears.
An extremely overweight, but surprisingly agile ninja that is promised by Wuya and Jack Spicer that if he retrieves a Shen Gong Wu called the Sword of the Storm then he will be able to join the Heylin.
An ancient evil demonic warrior made up of the Helmet of Jong, the Heart of Jong, the Two-Ton Tunic, Jetbootsu, Fist of Tebigong, Third-Arm Sash, Shroud of Shadows, Eye of Dashi, Logi Kite, and possibly any other Shen Gong Wu it can acquire.
All Your Powers Combined: Has each power of the Shen Gong Wu that makes up its form. In its initial appearence, this is limited to...
Cut Lex Luthor a Check: Unlike other villains, who have grandiose schemes for world domination, Pandabubba uses Shen Gong Wu for relatively mundane, but illegal, money-making ventures, like arming his thugs with Wu to commit crimes or mind-controlling people into a workforce of slave labor.
A French mime. He possesses magical powers which allow any object he mimes to manifest as a solid, but invisible construct, ranging from an imaginary lasso to an invisible box. These constructs can be altered by the imaginations of those who come in contact with them, such as the Xiaolin Dragons imagining a door to escape a box he trapped them in.
The Cameo: Made a brief appearance in the first part of the series finale, being enslaved by Jack Spicer.
Ambiguously Gay: The henchman in the white suit. It was even planned for him to say to the other henchman how much he enjoyed flying with him in the episode, but it got the cut, due to the very obvious implications.
Sealed Evil in a Can: Within the Mosaic Scale Shen Gong Wu. His episode has him accidentally unsealed with the Mosaic Scale being broken in half after being dropped a great height, and resealed by Kimiko using her fire power with the Eye of Dashi to weld the Shen Gong Wu together.
Yodel Land: Half of the time, him saying something is the stereotypical yodeling piece. The other half is him talking in an accent suitable for Yodel Land. He even wears suspenders and pants! The only thing he's missing is a Tyrolean hat, as he wears a bucket instead.
Anti-Hero: He's rather trigger-happy since his first appearance has him shoot explosives at Dyris when the Xiaolin Dragons just saved her from the freezing water, so they naturally defend her from him. He's also quite scary-looking. Once Dyris' true nature gets elaborated on, he's firmly in the right.
Taking You with Me: He holds Dyris with him as the iceberg they're on collapses, causing them both to be frozen in ize in the arctic ocean.
Top Heavy Guy: His abdomen is even very narrow right at the top of that area compared to his breast and shoulders (roughly a third of their size from left-to-right), making the cutoff point of his body's larger mass higher up than most examples of Top Heavy Guy.