Mostly the later ones in the series 1992-1993. Scratch and Hotspot come to mind. Also maybe MonaLisa, Halfcourt and Sandstorm.
Yeah, towards the end they really stopped creating new characters and focused all on variations of existing characters. I wasn't a big fan of having a hundred different Raphs, so it's a good thing that around that time I discovered comicbooks and skateboarding!
Yeah it looks like 1993 was the last year they actual put out original secondary characters which were Scratch and Hotspot. Like Ramdog said, a few secondary character figures from 1992 can also be tougher to find, though they do show up. Scratch and Hotspot would be the rarerest I believe, though someone out there who knows more about TMNT might know of a few others (variants, mail aways, etc.).
The line actually continued past 1993. Not exactly in huge numbers as the craze was well and truly over then, but some distinctly Jap-flavoured releases fetch a hefty price. The Metal Mutants and Cyber Samurai releases feature lots of chrome hence they are hard to find in good nick.
But the most famously hard to find figs are what the others have said - Hot Spot and Scratch. I managed to find Hot Spot - one loose and one MOC - for just under triple figures. Scratch however is a different story. He's not that great a figure, he was just produced in such low numbers that it's an effort to find him - and those who sell him are all too aware! I've seen a MOC go for $300+
Other slightly rare stuff are the variants such as Slash - (purple belt, purple belt with a red highlights) Rahzar (red nose) and Ace Duck (Hat on/off).
The only MOC Turtle I have is the Shogun Triceraton. He's rare, but not as rare as Scratch or Hot Spot. Got a good deal on him on ebay b/c the bubble had a slight crack. Had it graded and it only got a 60, which is fine by me b/c he stilll looks great. Gotta love the chrome!
I got a good deal on a loose Hot Spot on Ebay for only 2,99. But that darn Scratch keeps eluding me. As per my TMNT collection I'm not interested in character variations, just the characters themselves. So the Shogun guys aren't on my list to get. But Scratch however, is.
Have seen a few MOC Scratch's come up on Ebay lately, looks like they have been selling for around $250. Still need him myself, but would prefer to get him loose and it would be kind of a shame to pay that price just to open him up.
I've got a weird TMNT accessory question...I have a slash belt thats black...anyone know what that went to?
Um, Slash maybe? lol Slash's belt came in both purple and black, purple being the harder to find. Even within that, there were two variants - purple belt with a yellow S and purple belt with a red S. Red S fetches a mighty price. The new re-issues come with a black belt.
As an Australian, it's part of my job description to pay out New Zealanders. But those two are fricken gold!
Sorry if I confused you, the standard black belt with the yellow S was most definitely issued with the original run back in the 90s and is the most common one found. I only mentioned the re-issue for the sake of completeness.
The purple belt was the variant. It was often found with a variant on the actual figure itself - Slash's belly is normally a dull orange. The variant - usually found with the red S purple belt - instead has a bright yellow chest that matches his toe and claw paintwork.
Scratch and Hot Spot are not rare at all. I have owned several over the years. Now Shogun Triceraton and Shogun Shoate are tough finds and are by far the rarest TMNT figures.
Maybe it depends on what part of the world you live in. There seems to be 2 camps- Shogun Triceraton & Shoate are rarer versus Scratch & Hot Spot being the tougher to find ones. I just prefer the Shogun guys, Scratch looks pretty stupid IMO. Also, Scratch and Hotspot sound like Strip Clubs.