General
He bears the nickname, Blood Talon, and the pseudonym 'BoB', allegedly because gamers have difficulty in writing his name correctly. Another theory is that it is derived from the pre-release Tekken 3 art by Namco where he was seen on a motorcycle, but without any name given, he became known simply as Boy on Bike.
Hwoarang's name is based on the Hwarang, a group of elite male youth in Silla, an ancient Korean Kingdom.
Hwoarang has the most win animations in Tekken 5: Dark Resurrection and Tekken 6, with a total of ten win animations. However, one of his win animations would only show up after defeating Jinpachi Mishima in Tekken 5: Dark Resurrection, which is not the case in Tekken 6.
Hwoarang is the only person who has won an official tournament match against Jin.
Tekken 3
Hwoarang's bosses in the Tekken Force side game are (in order of appearance) Eddy Gordo, Forest Law, Jin Kazama, and Heihachi Mishima.
In one of Tekken 3's cinematic sequences, Hwoarang is seen to be rollerblading and carrying a large musical instrument, perhaps a bass/cello. This suggests that he is also a musician and performer to some extent, as well as a skilled fighter. Another thing that the image implies is that his love of music extends further than that of the rock genre - although difficult to make out, Hwoarang is clearly in some kind of tuxedo-like formalwear, alluding to the idea of him performing more classical pieces.([1])
Tekken Tag Tournament
None
Tekken 4
Hwoarang has short and 'styled' hair for the first and last time.
Hwoarang is seen out of his two stereotypical costumes (biker and taekwondo outfits) for the first time.
Hwoarang speaks English when he confronts Jin for a fight, with Jin responding in English as well. In later games, they only speak Korean and Japanese, respectively.
Tekken 5&T5: Dark Resurrection
The Heihachi trophy that was seen in Hwoarang's Tekken 3 ending is available as a customizable item for him in Tekken 5.
Hwoarang's sub-bosses are Baek Doo San and Jin Kazama.
Tekken 6
Hwoarang's name is pronounced incorrectly as "How-rang" instead of "Hwa-rang"
Hwoarang's "Item Move" feature is a soccer ball, which Hwoarang kicks at his opponent. Another shows him hitting the opponent with a baseball bat.([2]).
In the Scenario Campaign of Tekken 6, Hwoarang is a boss in the Industial Highway 357.
Other
Hwoarang's rivals in Tekken Card Challenge are Jin Kazama, Forest Law and Heihachi Mishima.
A character named "Iron Surfer", played by Stephen Fung, in the Hong Kong Martial Arts movie "The Avenging Fist" bears a strong resemblance to Hwoarang, and the movie itself is known for its many allusions to Tekken. The resemblance to Hwoarang is both in looks and fighting style ([3] and [4].