Never encountered/fought Verde, Femme, or Ryuga in his series proper, only encountering them in a special and a movie.
Encountered the second Camo for two episodes (fighting him in the first), fought alongside both users ofthe Siren Deck, and later became Onyx while he did not have the Dragon Knight Deck.
Was not a Kamen Rider after being resurrected in the final (due to not having his deck on top of not having his memories), but presumably recovered the deck somehow, as he is seen using it in later crossovers.
Continued being a Kamen Rider after being rescued and still holds the Dragon Knight deck.