The ages of the monks were never explicitly stated, but I always thought they were teenagers between 13 and 16, give or take a few months. This, of course, is just my opinion, so feel free to disagree with me or read on if you’re curious about my reasoning behind the monks’ order of seniority.
Clay has always seemed the most mature of the monks, is undoubtably the most grown, and has been confirmed to have a younger sibling who appears to be close in age to him and to the others monks, all of which implying that he is the eldest. Normally, I estimate him to be around 16.
Next, I project both Kimiko and Raimundo at age 15, with Kimiko being a few months older than Rai. Kimiko is older in my head mostly because Raimundo tends to act less maturely than both her and Clay, though that is not really an accurate indicator of age.
Omi is not the youngest in my mind because he is the smallest, but because he seems the least wise (and I mean that in the kindest way possible). While it is true that Omi was raised in unique circumstances of growing up in a Xiaolin temple, he can act like a child when it comes to new experiences and when his authority or pride is challenged. Omi is very trusting will approach dangerous situations, e.g. his reaction to strangers in New York, and he will get angry if people show him up, e.g. Clay lassoing Omi during his lesson on cheetah speed tactics, the idea that Raimundo(“his inferior”) or Kimiko(a girl) could beat him. I imagine Omi had just recently turned 13 when the show started.
Extra: Though he is not in the picture, I think Jack is 14, almost 15.
If you read all that, thank you for your time and patience. I hope you enjoyed my theories and reasonings.
Raimundo didn’t understand that his bed was a bed in the first episode, but otherwise we do not hear much about how the new monks took to their rooms. Kimiko, Raimundo, and Clay have been shown to be deep sleepers, and they were probably used to sleeping through various outside noise i.e. Kimiko and Rai both being from cities and Clay being from a ranch filled with animals. With that in mind, it makes sense that the three of them adjusted quickly to their new living arrangements.
Omi, on the other hand, is from a quiet temple and probably slept by himself in that bank of rooms until the other Xiaolin Dragons came to the temple. We also know that he balances on his head both when he meditates and when he sleeps. The pose probably helps him focus his mind and calm himself, resulting in him being able to sleep.
Hopefully, Omi adjusted like his fellow monks and now sleeps on his head sheerly out of habit. He probably finds it comfortable.
Xiaolin Showdown is a great show, but it does have a decent number of plot holes. One of the discrepancies that bothered me the most, personally, was when it was revealed that Chase Young and Master Monk Guan fought alongside Grand Master Dashi… which would make them over 1500 years old and only Chase had a reason to be able to be that old.
But, we also know that both the Xiaolin and the Heylin are capable of great magic e.g. Dashi’s creation of the Shen Gong Wu, Wuya’s powers via Heylin magic, Lao Mang Lone Soup being a Heylin immortality potion. The Xiaolin monks probably would not value eternal life, so their methods of creating an immortaility potion similar to or identical to its Heylin counterpart probably would not be well-known nor used often. But, when one’s best friend turns himself into a monster, anybody would have the incentive to extend their own life in order to save or stop their friend.
TL;DR While Chase Young used a Heylin potion to obtain immortality, Master Monk Guan found another way using Xiaolin magic. Guan’s motivation behind extending his life probably was either to stop Chase or to find out if Chase had any good left in him that could be saved.
He’s worried about flying into a temper and getting into a fight because that would only justify the names he’s been called.
By this logic, if Raimundo had consumed the soup instead of Chase (as he originally volunteered), he would not have become truly evil either.
"The reason why Omi has such a big ego is because he’s very passionate about what he does (also water is the element of passion)."