Model kits

So I’ve been getting into model kits recently and I collected and built the gurren mk 2, Vincent, and Lancelot models that are pretty common, I’ve seen there are a few rarer ones for Gawain, Lancelot Albion, gurren seiten the Alexander’s and guilfords variant of Vincent, but I was wondering if there were any other code geass kits floating around somewhere? The instruction book for Vincent mentioned mordred and Tristan for example but I can’t find lots of them anywhere