Scissors was never really meant to be a real character. His primary function was to demonstrate some of the key factors of Ryuki as a show: Contract Monsters will turn on you if you lose your deck, not all Riders are good guys, and Riders can die.

In all 3 what !?!? Is there a specific "how to watch" for this show ? I'm halfway through Ryuki right now, should I watch the movie or the special at a certain point ?
And is "13 riders" the special, and "Episode final" the movie ?

I really enjoy Ryuki, because it keeps a good mix between misteries, comedy and action (at last for the first half), but knowing there's not one but TWO retcon is somehow disappointing from what I expected about the finality...

Right now i am currently watching kiva and i have just finished Den-O. I am putting wizard on hold (at episode 14) until the movie war ultimatum is subbed, so it may be a while.

Once you've seen the whole show then watch Episode Final since it replaces the events of the final episodes with a new ending. After that check out 13 riders because it gives you a brief alternate telling of the entire show.

So...Kamen Rider Zolda is pretty damn awesome isn't he? :D

Depending on how you interpret the story you might change your idea about the "Retcon". Just take the main series as the main continuity and treat the other two forms of media as side-stories. If you listen/read to the interaction between Kanzaki Shiro and Yui often you might see the connection all three have. Granted, most of it is pretty much unconfirmed fan-theory but you might come to the same conclusion once you finish the main series.

Thanks for the replies

He's a jerkass with an heart of gold, I like his reactions towards Kido. It's reminescent of the relation between Shouichi Tsugami and Hikawa in KR Agito (by the same writer as I saw), one is a idiot good guy who regularly put the more logical other out his usual trails.

Scissors is in the main show, the 13 Riders special, and Decade. He doesn't last long in any of them.

Not that I'm not enjoying the human element/drama in Ryuki, but is there a point in the show where anything involving Riders/the Mirror World isn't crammed into the last three minutes of an episode? I'm all for shifting focuses, but its been pretty much the same pattern every episode so far.

Granted I'm only on episode 12, but I thought I'd ask.

It's early Heisei. All of the shows were like that up through Blade. Ryuki does get more action-packed as it goes on, though.