Acting for Two: Stephen Lunsford as Kit and Adam (The other Riders besides Len and Kase make appearances as both Earth and Ventaran versions, but never have both their characters in the same scene). The fight between the two brought new meaning to the phrase 'You are your own worst enemy.'
The third episode features a scene where Len, portrayed by karate champion Matt Mullins, trains on a rooftop. Although it makes sense for the character, the scene has absolutely no plot relevance. Looks good, though...
Later in the season, there's a sparring scene between Len and the Advent Master, played by Mark Decascos. That scene exists to show off their skills.
Fan Nickname: In some circles, Kit has gained the nickname of "Kamen Rider Brick" for his talents of spending a lot of his early screen time not quite understanding the plot and shouting "What are we all yelling about?!". Particularly compared to his slightly-more-on-the-ball Japanese counterpart, Shinji. But considering he's in the midst of a Jigsaw Puzzle Plot and his mentor Cannot Spit It Out, can you really blame him?
Between his bat and knight motif and airing on a network that once had a large amount of DC comics shows, is anyone surprise a lot of fans call Len/Wing Knight "Batman"? Fitting, given that Kamen Rider Knight, his Japanese counterpart, is supposed to be a Batman Expy.
On Japanese video streaming site, Nico Nico Douga, which contained some of the Japanese dubbed clips, the actor named Scott Bailey who played JTC/Kamen Rider Strike became known as "Kamen Rider Sugirike" because of the Japanese voice actor named Tomokazu Sugita.
Still within the same video streaming site and also to some forums, the actor named Matt Mullins who played Len became "Len Akiyama", thanks be to his Japanese voice actor who is no other than Satoshi Matsuda who was Ren Akiyama/Kamen Rider Knight in Kamen Rider Ryuki.
Eubulon is sometimes called Chairman Alternative, a nod to Mark Dacascos' role on Iron Chef America and his character's Ryuki counterpart.
Keep Circulating the Tapes: For those who want to watch in North America, the only way to see it is to watch the episodes via Internet if you can't buy the DVDs released in other countries.
Nearly for the name of Wing Knight and Knight: Len and Ren. Bonus points for Len's Japanese dub actor being the same person that portrays Ren Akiyama as seen above.
Tony Sano, the actor of Spear, have the same last name as Mitsuru Sano/Kamen Rider Imperer, Spear's counterpart.
Network to the Rescue As mentioned before Dragon Knight 's ratings were terrible, nevertheless both 4Kids and the CW backed the show to the last claiming that it's still a really good show and ratings don't always reflect that. To be fair, they had a point considering how popular the show was and still is outside of the USA.
Old Shame: Of a sort with how they reportedly left the "Kamen Rider" designation untranslated to avoid association with Saban's earlier, much loathed import.
Recursive Import: The show was dubbed into Japanese, with a vocal cast featuring several Kamen Rider veterans. For extra points, Len's dub actor is the actor who played Ren Akiyama/Kamen Rider Knight, Wing Knight's Japanese equivalent.
Screwed by the Network: CW 4 Kids dropped the show just two episodes short of the series finale. Proof here. On the other hand, they did finish the series off online (before it even stopped airing!) though for what it's worth, one of the unaired episodes was yet another Clip Show.
As for why: 4Kids ends shows in December and starts new ones in January. Kamen Rider didn't quite finish its run by New Years', so tough luck.
Also as mentioned under Network to the Rescue they had plenty of chances to cancel it due to its low ratings, but refused to do so because they really liked the show.
Short Run in Peru: A number of episodes aired in Brazil prior to the US (who had decided to put the show on hiatus for a bit).
Aaand Mexico beat them to it.
What Could Have Been: The show's producers have said that they originally wanted to adapt a different Kamen Rider (the rumors variously say Faiz or Blade), but were made to do a series with more Riders (and therefore more merchandise). They've also said that if Dragon Knight did well enough, they would've gone for the passed-over series next.
According to an interview with one of the writers, Grant was originally conceived as an eco-terrorist who Xaviax coerced into believing that Dragon and Wing Knight were working for a corporation that was polluting the environment. Actor Christopher Babers also said in an interview that he believed that Camo had a soft side deep down that might've been a game-changer had he had a bigger role.
Believe it or not, Jason David Frank almost got the role of Len. However, due to producers not wanting people to believe Dragon Knight was in the same universe as Power Rangers, the role went to Matt Mullins - ironically enough, had the show's producers adapted any post-Wizard Kamen Rider series, odds are that they would likely have had to make the series in the same universe as Power Rangers, in order to adapt the crossovers between Kamen Rider and Super Sentai.
The World of Ryuki arc in Kamen Rider Decade featured Kamen Rider Abyss. Said arc aired in the middle of Dragon Knight. However, the reason Abyss was not used was because of the fact that the rider was a part of Decade's license - if Adness wanted to use Abyss, they would have had to have bought the rights to Decade.