However, there are just some groups where those roles seem to be flipped! Sometimes it may be just the looks, but other times the oldest ones seem to kind of... just forget their age while the youngest one looks on shaking his/her head.

SEE ALSO: Former idol turned actor wins damages lawsuit after being struck in the face by a golf club

EXO's Xiumin and Sehun

Xiumin (born 1990) is the oldest out of all 12 members, while Sehun (born 1994) is the youngest. But if you just looked at them, you wouldn't believe so. It doesn't help that Xiumin is always smiling and laughing and generally being cute while Sehun tends to go for the more charismatic character.

T-ara's Boram and Jiyeon

In Boram�(born 1986) and Jiyeon's (born 1993) case, it's not really quite that Jiyeon looks older than she is - it's just that Boram has the ultimate babyface. Boram smile makes her look like a porcelain doll frozen in time, and even the T-ara�maknae�can't beat that.

VIXX's N and Hyuk

Although�N�(born 1990) does look young, the reason why he and Hyuk�(born 1995) are on this list isn't because of their face - it's because N is a dork. A cute one, but the oldest members of VIXX tend to be the ones the ones that are hyperactive while the younger members just look on.

Girls' Generation's Taeyeon and Seohyun

Technically, Taeyeon�(born 1989) and Seohyun�(born 1991) don't have that much of an age gap, but Taeyeon isn't K-pop's representative kid leader for no reason. Taeyeon has a cute, bubbly image while Seohyun has the sophisticated, graceful one. But that's not all! While her unnis�are usually being cute dorks, Seohyun is usually the one standing by serenely with an air of disapproval for their idiotic antics.

Block B's Taeil and P.O

Taeil�(born 1990) not only looks like a baby, he also kind of talks like one. His habit of mushing a lot of his syllables together when he talks has gotten him the nickname of 'baby', and it doesn't help that the rest of the members take advantage of his size and treat him like one sometimes. P.O�(born 1993), equipped with his lower-than-low voice and as Taeil's biggest fanboy, just might be the biggest culprit of baby-fying his oldest hyung.

Super Junior's Leeteuk and Kyuhyun

Here we have another case of happy-go-lucky leader and chic maknae. Leeteuk�(born 1983) introduces himself as Super Junior's Peter Pan (or he used to, anyway), and he's full of happy smiles and jokes. Kyuhyun (born 1988), on the other hand, would rather stand chicly (that's not a word, is it) to the side and smirk at his hyungs�as they joke around.