Lots of toys: Riders, Ultra etc.

[Forever Knight]

HG Rider The First and some classic figures
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124840244

Masked Rider Kids
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124833146

Shocker Rider Version The First
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124833032

RAH 1/6 Stronger Charge Up
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124861909

Ultraman Type C
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124862348

 

[Igadevil]

HG Rider The First and some classic figures
http://www.thai-toku.com/cgi-bin/Y1Gold/tcsyabb/index.pl?board=general&action=display&num=1124840244
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That's the original Rider 1, but done "cross-section" style so you can see his cybernetic insides. Based on a regular feature in Kodansha's Kamen Rider File magazines.

I haven't seen any actual toys from "THE FIRST"...yet.