At the time of filming, Aaron Yan, Calvin Chen and Jiro Wang were all members of the now defunct Taiwanese boy band, Fahrenheit. The group performed both the opening and ending theme songs. Yan, Chen and Wang also contributed solo tracks to the film.
Although, The X-Family had a strong sci-fi/ fantasy feel, the production crew viewed it as a futuristic wuxia film. Their goal was to show the way wuxia would be when it's in the present day and in the future. In the first episode they paid homage to the wuxia genre by having Xiu transfer his energy to the KO Fighters in an effort to restore their powers. This "transferring of energy" to help others is a recurring theme in The X-Family.
It is the sequel to the 2005 drama KO One and apart of the larger Chain of Series known as the Zhongji series. In the universe of the Zhongji series, twelve dimensions are divided.
Days before its airing date, a wave of opposition against the show played out on the net. Taiwanese netizens pointed out the costume for the character Lan Ling Wang had a high degree of similarity to the character Cloud Strife in Final Fantasy VII and blasted the network for its blatant copyright violation. Executive producer Wang Xin Gui was dismayed by the accusation and denied its validity.
Netizens were dissatisfied by the producer's answer and proceeded to send petitions to boycott the show. The producer responded by issuing a public apology through Comic International Productions Co., Ltd, and stated that they were in the process of negotiating with Square Enix about intellectual property rights. It also stated the similarity between Lan Ling Wang and Cloud Strife was purely coincidental. As result of the uproar, HIM International Music postponed the original soundtrack release date due to its CD album had contained images involved in the copyright dispute. The show and its companion books were released as scheduled.
Netizens were dissatisfied by the producer's answer and proceeded to send petitions to boycott the show. The producer responded by issuing a public apology through Comic International Productions Co., Ltd, and stated that they were in the process of negotiating with Square Enix about intellectual property rights. It also stated the similarity between Lan Ling Wang and Cloud Strife was purely coincidental. As result of the uproar, HIM International Music postponed the original soundtrack release date due to its CD album had contained images involved in the copyright dispute. The show and its companion books were released as scheduled.
The plot may be unrealistic, but the characters are partly based on the actors and actresses who portray them. In the show, Dong Cheng Wei is a unit of the Iron Protection Team that protects the Iron Dimension with its music. In real life, Dong Cheng Wei is a rock band started by Chen De Xiu and Jiro Wang back when they were in high school. Xiu is a member of this band; Jiro is both a member of this band as well as Fahrenheit.